I think it was a combination of everything but basically my eyeball is too long and the astigmatism too bad and the dry eye thing really does not help. I can't wear contact lenses either. I tried. I could NOT go outside without sunglasses or I couldn't see, because my eyes are so dry any sort of breeze at all was unbearable and made the contacts pop out or dry up. My corneas also seem to scratch easily, which is very, very uncomfortable. What was the point? It was actually a relief to hear it because in some areas they really try to sell people on it and I've actually had OBNOXIOUS clerks at those mall vision center type stores try to push it on me until the eye doctor actually did the exam and then it's "not for you." Sometimes also in public people will actually make comments to the effect of "gee, have you ever considered laser surgery you'd look so much better, I had mine done and I'd never go back to wearing glasses again." Since there are no moderators in real life I can have a bit of fun with those types of people.

I actually don't mind wearing glasses because now I have the transitions coating which is the built in photogreying which I find very handy, also, I tend to do a lot of things where I need eye protection anyway and I never have to think about it, I already have it on.

From a short perusal of what I found on the internet by searching "lasik surgery complications" it seems that unless patients are screened very carefully for suitability they can end up with complications of dry eye, decreased field of vision if their pupils are large because the cornea shrinks after the laser surgery, and a LOT of glare problems such as haze, halos, stars, etc, at night. Hmm, I seem to have these conditions already.
The remedy for some of the screw ups is to wear hard contact lenses over the lasiked eyes (which I can't do anyway, and what would be the point of having to wear contacts?!) or to wear glasses over the screwups, but again, some people find that after lasik they cannot ever get back to having their glasses work well enough to correct them to the their "best vision." It's gone. Everything is a little blurry. Another possible complication is "night myopia" where the lasiked eye gets more nearsighted at night, meaning glasses have to be worn after dark.

All in all, for some people, lasik just changes what you're wearing the contacts or glasses for... what you were born with vs. what they did to your cornea with the laser... not a good option for some of us.