Had mine out 2 years ago...easy ass surgery, and best thing I did after putting up with it for 4-5 years. Fukk having gallbladder pains, those are no joke. I didn't have any stones, but my gallbladder wasn't functioning correctly on it's ejection fraction. If you do not have any stones, they can do a HIDA scan to see how your gallbladder is functioning. My experience has been the same as pheedno's. I may have to use the restroom occasionally after a fatty meal, but not much different than prior. Chile/spicy foods can be hit or miss though, but not too bad. I just try to avoid it some unless I am home. The first year or so I was a little more bloated, but this past year has been pretty much back to normal. I tried using NOW's digestive aid product, and it gave me the most God-aweful shits and farts smelled like hell, lol. IO still take them if I want to stink the household out, lol.
Get the surgery, you will thank yourself afterward. Just see how you digest things afterward, it may take some time before you get less bloated, or until you see how foods effect you. Going through the contractile pain is not worth it.