I'm actually happiest with there existing books of both sorts: the no-homophobia worlds, and the more-realistic worlds (because sci-fi/fantasy books really do seem to divide themselves fairly clearly into one or the other category). Because I like having the choice to read a book of either camp, depending on my mood.

I also think that if we're in sf and fantasy, there absolutely needs to be books of both types, because we need to both reflect the world we have and imagine worlds beyond that.