I had mine out in 2004. My experience is very similar to Altari & Misfit's experiences.
The good news is that about ~ 2 weeks and I was back to normal. I had mine out in between finals and walking in my college graduation! Bad news is that it was the start of my weight gain. I packed on 10-15 lbs right away. The first few months were the worst... I couldn't go back to eating "just anything" like they said I could. I now have IBS because of it plus constant indigestion. I live off of Prilosec.
I HAD to have mine out because a gallstone got stuck in the bile duct and my gb quit working. So I know it was necessary...but in many cases, this surgery is unnecessary. If I had not had the circumstances that I had with mine, I wouldn't have had it out. It was really **** the first 3 years or so w/o mine.