Disposable parts

How many body parts are disposable? It seems my body is determined to have every 'disposable' part removed. First it was a vertebrae, then a uterus, cervix, and fallopian tubes, now it is a gall bladder. In ten days I will be having another part removed. Three years, three surgeries. Each one shorter and easier than the one before, but it is getting old. Seriously, getting old. Hopefully once this is done I will feel like a human again and not have any other parts go all wonky on me. yesh.