Almost gone, but growing back

I'm amazed and horrified every morning. More hair falls out in the brush and in the shower. I can see my scalp now. I think the only reason that I have cut all my hairs down to the same length is because I like knowing how much hair is falling out everyday. I guess that I just want to know what is new growth and what isn't. If I shaved my head, then it would all appear to be new growth, when in reality some of it is on its way out.