They might view other people’s penises the same way you viewed vaginas, but not their own. I would guess that they find it like looking at another person’s tear ducts. Unappealing because it isn’t theirs, but not something they find that gross on themselves. It’s a mostly neutral part of themselves most of the time. They might take pride in it like gay men, but people generally aren’t as turned on by their own body even if they are attracted to other people with similar bodies. Regardless of if you’re proud of it, your own body just doesn’t hit the same as the bodies of others.