I’m 22years in, had it when it was in its infancy - never regretted it, hacked off now though as ‘old age’ has started happening and need glasses for reading, still have 20:20long distance.
This, except I'm about 18 years in. They always said I'd need reading glasses when older, though, and that never bothered me (except for falling asleep while reading and glasses digging into the side of my nose.)
I got them done (Lasik) for being outside - walking and cycling in the rain, and swimming in the sea. It was very exciting, the first time I went in the pool and could see everything down the other end, and even more exciting, swimming at Bournemouth and being able to see everything from the Needles to Old Harry Rocks. And my bag on the beach.
I did quite a bit of research before getting them done, so was aware of possible side effects and that my eyes might not be suitable. You need to have had a stable prescription for some time.
I don't regret it at all. I haven't had haloing or dry eyes or anything like that, and I've done things I'd have never done if I hadn't had them zapped, like white-water rafting (I have no intention of ever doing that again, mind you, but that's nothing to do with my sight!)
It wasn't painful at all - the most uncomfortable bit was having my eyelids clamped open, but that's all it was - a bit uncomfortable.