What DOES the Gall Bladder do?

After almost a week of recovery from my surgery, I have to wonder what the gall bladder really does? I mean, why are there things in the body that we don't "really" need? The only thing I have noticed is that I can't eat as much as I used too but I can attribute that to beign sore from them digging around in my abdomen. Of course, eating LESS sure isn't going to be hurting me. Anyway, I am feeling pretty good. I am still sore but not taking pain pills anymore. I can walk around, cook, do basic stuff without being too uncomfortable. The only real issue I have is bending over and getting up and down off of the floor. I am mostly sore at the incision near my belly button, so bending gets complicated. I can tell I am going to have to get back into shape AGAIN once I am really well. Going up and down stairs gets me a little winded but I keep telling myself that they DID take out an organ! It's going to take some time to be 100%. You know I like to GO, so I am just impatient. Jeff has to go back to work tomorrow so I will be taking the kids to the gym while I go to my follow-up appointment. Lucky for me, they offered to watch the kids anytime so I'll just drop in and leave them for an hour or so. Then Jeff has the four day weekend and I should be pretty much back to normal by the time he heads back to work. Dad and Terrie will be here next Wednesday so we are looking forward to that too! We are headed to Tom and Janean's (our Army fam) for Thanksgiving so I won't have to do any cooking at all. That will be kind of nice!