I am currently doing my PhD in oceanography in the US. I am definitely happy where I am, but it for sure fluctuates. Sometimes my research/classes bum me out, which is where the community I'm in really starts to matter. There's a lot of give and take there. My partner and two of my best friends are doing theirs as well, and they started a few years before me so they were a great source of advice. What I know about grad school is centered around programs in Earth, Environmental, and Planetary Sciences, which tend to have a reputation of being significantly chiller.
This is what I can think about right now (as I am avoiding writing a term paper), and others might totally feel differently. If you have any questions feel free to PM me.
Pros:
- Much more chill environment (especially with work hours, I know plenty of people who go surfing during the work day)
- Your professors are your supervisors, and eventually will become your peers. Less of an "authority" gap. I personally feel much more comfortable around my professors nowadays (I've even gotten drunk with some of them more than once).
- You're getting paid to learn about stuff you're interested in.
- As a PhD student, you will become part of the backbone of your lab, which is awesome work, leadership, and logistical experience.
- A lot of your learning will come from talking and listening to people, whether it is students, postdocs, professors, or other scientists, in the hallway or at a seminar. At my school there's a lot of people who work in my field, so it feels awesome to randomly chat with them and get a new perspective on an issue.
- GPA matters a lot less.
- You meet a lot of people with similar interests, but wildly different backgrounds.
- You're literally expanding the range of all of human knowledge—aint that cool???
- You will improve your writing, speaking, and thinking. (You might become lazier, but more efficient).
- Plenty of opportunities to apply for funding, workshops, summer schools, field trips, professional development opportunities, etc.
Cons:
- Research and academia are very hierarchical. (ug>grad>postdoc>prof>admins; you might have class with your advisor and they WILL put extra attention on you).
- You're in student/professional limbo. Work, classes, and personal life get very muddled.
- Becoming part of the backbone of your lab can be a huge responsibility to get stuck with.
- You might be needed/expected/required to do field work or work weekends/nights.
- Some required classes are smelly doodoo and will not really benefit you rather than put extra stress on you.
- You could get stuck with research that is going nowhere—for years.
- Depending on setting, peers can be really competitive, and supervisors can be entitled assholes.
- You might feel like you can't escape your field (everyone you talk to, and everything you hear, is somehow related to your research).
- If you move, finding a new support group might be hard and/or take a while.
Things to think about:
- What is the financial package offered? Is it an RAship or a TAship? Will it be in stuff related to your work, or just "a job"? What will be the weekly workload of it? How long is this funding secured for you? Will your pay increase/decrease as time goes on? Are grad students at your institution unionized?
- What project will you be working on? Who will you be working on it with? Are there alternatives if it doesn't work? (Some institutions have legal provisions so that you can't be forced to do work that is unrelated or detrimental to your research progress). What's the size of the lab (undergrads, students, postdocs)? Will there be multiple people to seek advice from? Will there be people you're responsible for?
- What do people who have been in that program for a while think of it? How long does it usually take people to finish? What are the requirements to fulfill each step/what's the program's timeline? What do they think of the professors? What do they think of YOUR lab/advisor? Are they supportive/assholes? Are they lax or a helicopter advisor? Ask about any former lab members or collaborators you could get in touch with.
- How do you feel about the physical setting? The city, the campus, the facilities/labs, etc. What is the community inside and outside the university like? Close to/far from friends and family? Ask if you could get a visit/tour of the campus/department.
- Why do you want to do a PhD? Is it a practical or philosophical goal? It won't be easy—it WILL suck and drain you physically and emotionally. Will it fulfill you during and after?
EDIT: Geez just posted this and it's a lot of text I'm sorry everybody...