And that is why gay sexual practices spread nasty diseases much more than lesbian sexual practices do.
Also, gay-on-gay violent crime is, I believe, a lot higher than lesbian-on-lesbian crime. It's hard to get a handle on this though, since as a general rule, media coverage of spectacularly violent, gruesome, dramatic crimes committed by gays is forbidden. Very few newspapers and TV networks are willing to break this sacred taboo.
Also, I haven't heard about lesbians raping children yet (even if the media may be underreporting, it's hard to imagine that happening on the scale of male pedophilia.)
I would say that lesbianism evokes less disgust than homosexuality precisely because it does not evolve the dirtiest area of the human body. Had homosexuals restricted themselves to mutual masturbation, most people would find their practices less abhorrent.