I don't know why I don't like to bathe either. It has been a problem for me for quite some time now. Before I was diagnosed with my disorders/illnesses, like early college and before, I never had a problem with showers.
Part of it might be a self esteem issue, as in, "since I look like crap anyway, what's the point?"
It also has to do with the depression I feel, that I don't really care. I rather just lay and be comfortable and not even bother doing anything. I don't feel as if I shower my life is going to change. Shower or not, I'm going to be the depressed recluse that I usually am no matter what. I know that's a terrible way to think, and I'm going to therapy to try to stop thinking that way

But that's the rut I get myself into sometimes.
I know that logically if I do take a shower it'll make me feel good. And it does, 100% of the time. I guess what I want to figure out is why I don't want to do something that I know helps me. Not only hygiene wise, but mentally too.
I take a shower usually every other day, which I guess isn't that bad. I'm not sweaty or anything
I would like to get better at this, though.
-KAT