Eyes
I guess I will speak for the 'other' side. I have very bad eyes (not far from being legally blind), have astigmatism front and back of each eye, and I have scarred corneas. I have worn hard contact lenses most of my life (since I was 18). I can not have lasik or any other eye operation because of my scarred corneas. I have scarred corneas from hard contacts warping on me in my mid twenties, and taking layers of my cornea off. I almost had to have cornea transplants.
When I wore hard contacts, the best eyesight I had was 20/35 at best, probably more like 20/40 most of the time. About 3 years ago, my eye doctor put some soft contact lenses on me (because of the advances they had made with soft lenses and especially being able to correct astigmatism with soft lenses that they couldn't do before). My eyes fluctuated for awhile and my eye doctor kept switching up prescriptions for me. After awhile though, my eyes settled in, and now I see 20/25. It may not sound like much of an improvement to you, but to me, it has made a world of difference. Everything is much sharper, and I can see ball shots now that I had to guess at before. This is the best eyesight I have ever had, except when I was younger than 6 and did not wear glasses then.
Keep in mind though, that even with Lasik, everyone's eyes, as they age, have a tendency to go farsighted, and you may still have to wear glasses when you get older. My brother had the first operation, when they came out with it, not lasik, PRK or whatever ( From Dr. Bruce Grene, the doctor that first did these operations in the whole country) and now he has to wear glasses (he doesn't like soft contacts, says they are too big).