Do you look at the asshole as the male equivalent of the vagina or do you just see it as an alternative to pleasure your penis.

See as much as I don't have a problem with homosexuality, I can't wrap my head around the allure of anal sex.
It just seems to me like simply sticking your junk into a sump.
And when you shower, do you wash specifically in that area as you would wash your penis in preparation for a saturday night one night stand?