Technically, women who love men are "Homosexual" yet are not considered gay
Homo does not refer to Man/Human it is the prefex 'homo-' which comes from the Greek 'homos' which means 'the same'. The term was used to refer to ourselves, for reasons which should be apparant
If you want to get technical, you should be pushing for a different name for Homo sapiens!
As for the vomitting thing - I understand. There are many things that make me sick, but I support people's right to do them if they cause no harm to anybody. It gets difficult when others are indirectly affected of course, which is the case in most things. Its just a matter of degree.