I have been thinking about if for years, but have decided against it.
If you rely on you eyes for a living, are you willing to risk the possibility of blurred/ghosting/reduced night vision?
I would suggest you ask a NON-opthalamologist doctor (surgeon, maybe? as they rely on their eyes quite a bit) for their opinion before you go through the procedure.
I have read a bunch of the message boards linked to in previous LASIK posts here and elsewhere.
One thread in common was that a fair number would have not done it if they realized they would have eye pain, ghosting, no night vision, etc. Something that was pointed out repeatedly on the boards was that "20/20" vision only means you can see a small portion of that line on the eye chart--it does not mean that you don't have ghosting, blurred vision, etc. So when they say 999/1000 have 20/20 vision afterwards, it does not address the problems some might be having.
If you decide to have the surgery, get a second opinion as to your suitability as a candidate--there are some places that will push the envelope to get more surgeries done, and will do people with too large of a pupil diameter, too much astigmatism, etc.