My dad had it done because of glaucoma (no other options), and the first time they messed up his eyesight so badly that he could barely see. He was in immense amounts of pain, and after his eyes healed, they had to do the surgery again only prolonging his pain. He can see now, but has to wear reading glasses. Needless to say, he's not a fan.
My vision is so bad, that the doctors say I'll be legally blind in less than 10 years if I don't get it done. Basically, I'm just weighing the good versus bad from people I know who have experiences. Thanks, guys.