Personally, based on what I know, these are my points comparing Ethereum vs Bitcoin:
1(Technological capacity/potential) Ethereum by far wins this one. Ethereum can do everything bitcoin can technologically wise PLUS can already - act as the new decentralised "server" for all Developer applications - allow for certain existing and new currencies/blockchain to merge and integrate into the ethereum blockchain.
Which then leads to - Dapps allowing IoT/smart devices that can communicate independently of each other( making stuff like auto selling excess solar power to neighbours/ drone delivery services / driverless car services/ airbnb auto lease services) - decentralised media outlets - decentralised identity database - finance decentralised international banking apps - realestate/automated inheritance apps/parliament voting list goes on basically anything you can think of as a business can be run on ethereum.
What's to come that bitcoin can't do - even more transaction capacity( necessary to run more apps/ more intensive stuff ) - sharding which allows data to be split and stored on computers world wide. ( every one holds 1 piece of a 2000 puzzle ) and we still make a full puzzle in the end - with more transaction+sharding Ethereum is set to become the new internet that is decentralised. Nobody can stop it ever. No government can. Every device on the planet will be a part of the super computer mind hive and to shut down or block any part of the internet, the world would have to turn off ALL devices that exist. If a single device exists, the internet lives. (Different from now, internet is being supplied by a few companies in the world, like AT&T or GTT while data is stored by Google/Amazon etc. All other internet providers get internet from them and supply it to you) - integration of quantum communication and computing transcending ethereum to the next level. We're talking about a super AI that can learn everything and anything and organise things to an unimaginable level based of everything it can access on the ethereum network(by then the ethereum network would have more information than google ever dreamt of) and the AI is answerable to nobody but the consensus of the population using the world AI run by ethereum.
That's as much as we know now of the capabilities of ethereum. There could be more. Compared to Bitcoin tech ,which was probably new 8 years ago but today, people are slow to catch on to it.
2(Economic security vs miner node count diversification) Ethereum has currently more hashrate security and node count than bitcoin. We overtook bitcoin as the world most secure blockchain by PoW and unique nodes. This means that we are effectively more decentralised than bitcoin and it will take someone with malicious intent more money to buy hardware to topple Ethereum than it would to topple bitcoin. The likelihood of Bitcoin suffering a 51% attack that will effectively destroy the blockchain is greater than Ethereum. Basically also it means that it's easier for someone to delete/ban your bitcoin in your wallet from being included in the chain if you're storing your life savings in bitcoin.
3(Transactional use case) Ethereum has long since surpassed (about a year now) the number of transactions that bitcoin is making per day namely due to more and more applications being run on the network. These are transactions that are from unique individus. Which means they aren't spam just for numbers. They're active use cases. Effectively ethereum is being used more than bitcoin.
4 (ETH(Ethereum is not ETH) vs BTC as a currency and its accessibility) Ethereum currently loses on this front as bitcoin has a first mover advantage and its branding as blockchain technology has definitely put itself head of the game. When u hear news broadcasts speak about Dapps and potentials of the blockchain technology, they often misunderstand that it is run on bitcoin. Truth be told, bitcoin can barely run any Dapps effectively. So it can't be said that bitcoin does that. Bitcoin can only be said to be used for a transfer of funds or store. Also having been mentioned about in the past few years and being notorious for numerous instances, bitcoin is more publicly known for the time being. I think from here on when we're talking about Dapps it is essential for developers to correct the news hosts that it's not blockchain technology, the technology behind bitcoin that makes it possible. But It's Ethereum technology that makes it possible. Re iterate that it is Ethereum technology. Because that's the truth. Misinformation is bad.
5 (Economical adoption and popularity) Currently, economically, bitcoin is being adopted much more than Ethereum. Being a good store value and its subsequent splits which gives early dumpers free money. This is likely to continue until ethereum is better known that it is superior to bitcoin in what it can do unfortunately.
6(Business adoption and integration) though economically Ethereum is losing to bitcoin currently, its business adoption has seen far greater support than bitcoin. Ethereum is growing and being adopted by businesses from all industries and it's a matter of time before products are ready where average customers would be using Ethereum on a daily basis.
7(Future target group prospects) future target groups and prospects shows ethereum in a greater light. Ethereum has a much larger base of use cases to appeal to. It's ability to become the hub of world commodity trading and service distribution is unmatched while also being the brain of worldly science research(because of the amount of computational power it is able to provide).
All in all Ethereum has yet to become the no.1 in economic dominance for blockchain technology, but it will be in a few years. Nobody expected amazon to be where they are today. No one could have imagined Jack Ma's ideas would make him so rich. No one dares to imagine Ethereum being the world dominator in the industries across the board.
Obviously, I'm biased towards Ethereum. The power consumption alone is ridiculous. Bitcoin's goal has always been to be a "currency" and Ethereum, I think, competes in the space by default of it's applications. There are tons to choose from but I think, as with stocks, it's important to understand the fundamentals. But of course, you can always trade, even then I shy away from smaller crypto unless I believe in their success. Same reason I don't like to play around with penny stocks.