My belief on this topic? Simple. between homophobia and society's perceptions of gender roles, we're effectively equal to gay men, and though some of us do swing that way, those of us who aren't don't want that association. Because it always brings to mind the redneck screaming "faggot." Who wants to be the object of ridicule? not me.
But the decision we all have to make is what will we settle for out of what we want in order to be comfortable?