Got back on a board at 33 and thought that protections were useless because I was saying "I will just roll around, no crazy tricks". I fell on my elbow some weeks after. Not a big fall, but I got pins and needles for 1 week, which is a sign of bone fracture... I realized that I was lucky, it was just a warning sign, so I bought 187 elbow pad. Some week after I was flying forward after hitting a small rock on my way to the parking. I did a perfect ninja roll at reception, but realized 10 seconds after that my wrist had hit the ground and that small pebbles got inside the skin. Some bleeding, but it also went blue for 2 weeks. So I bought the Triple Eight gloves. Some months after, a scooter kid face crashed in front of me. He lost 2 front teeth. The helmet was useless in this case, but I realized how fast your head can be thrown to the ground. So I bought a S1 helmet.
From my experience:
-the S1 helmet is great but the light foam tears apart quickly due to sweating. But as this foam is just for confort, I guess it's ok.
-the Triple Eight gloves are great because you still have a lot of freedom with your fingers to pick up your board or roll on the ground when falling. It's not like classical wrist guards that look like a plaster cast and will impede any movement.
-Not so happy with the 187 elbow pads. They are bulky and it's uncomfortable to wear anything inside or outside. Also the real problem I had is that they were hurting when sweating, I got many bleeding burns due to the foam scrapping my skin.
-So I moved to G-Form elbow pad. They are very confortable, low profile, you can wear them under a sweatshirt, no problems. However I'm not sure they will provide enough protection in the case of a hard fall from the top of a bowl.
-no knee pads, but as I'm more and more doing transition stuff and going higher in the bowl, I might start wearing them only for that purpose.
In anyway, I consider that protections are your last line of defense to save what can be saved. It cannot replace you to learn how to fall properly and roll on the ground.