Everyone hates lesbians because of their disinterest in men:
- obviously straight men don’t like the idea of a woman that is unavailable to them
- straight women view attraction to men as an essential part of womanhood, so lesbians are less-than-women to them
- of all the members of the queer community, lesbians are the only group not attracted to men. because of this, lesbians are deemed close-minded and old-fashioned
Its not that surprising that in a patriarchal society, the group that has no desire for men is hated.