I feel like people who think all genitals are unattractive have a problem with their sexuality. Not to say that they like either men or women, but that they are embarrassed, confused, or in some other way think negatively about sexuality in general. I happen to think my penis is very attractive and I've known many girls to agree with that, in fact just about everyone who isn't sexually repressed. Likewise I think there are a lot of attractive vaginas out there. That's not to say every penis and every vagina is beautiful, but they certainly aren't all ugly.