I never used to wear sunscreen... I can remember a bad burn once where I ended up with blisters
About 5yrs ago, when I started helping out on the in-laws farm, I started putting sunscreen on my upper half... like neck, and shoulders... I normally wear tank tops with thin straps thru the warm weather, and working out on the farm, picking stone for 8-10hrs, is a recipe for a painful sunburn...
About 3yrs ago is when I started getting extensive tattoo work done... I have alot of money invested in my tattoos... I put sunscreen on them everytime I'm going to be out for longer than 20mins.
I do tan (not at a salon, and not as in laying outside in the sun) after one slight burn naturally because I do spend alot of time outside, and don't always reapply the sunscreen except on my tattoos.
But I think as I've gotten older, I've also gotten more respect for the sun and the damage it can cause.... If I can prevent a cancer, I would like to do so.