DH & I are in negotiations right now, too. He wants to find out, I don't. I love surprises, and my personal feeling is that finding out the gender beforehand is like opening your Christmas presents early (which I never did). I love the suspense, the anticipation, the dreaming.
However, I feel myself swaying on my decision. Just going out to look for a simple picture frame has been a lesson in how gender-obsessed our society is. EVERYTHING is either pink or blue! There are very few gender-neutral items out there, and the things that are just don't look as cute as the ones that are pink or blue, in my personal opinion. It would be nice not to have to buy everything in yellow or green (not my favorite colors). Also, I have a feeling DH & I are going to have a difficult time agreeing on names (he likes more common ones, I like more unique ones), so it would definitely be nice to cut down on the arguing time by half.
Argh, at the rate we're going, it might come down to something like flipping a coin!