It can be really hard for some early on but it will improve over time. I can't answer why some people have a tougher recovery than others but I have been coming to this board for almost two years now and I have read many times the same things you have just written and then posts back saying they are so much better a few months down the road.
Could it be possible you have pouchitis? Sorry you are feeling so miserable. I hope you feel better soon.