As I've pointed out elsewhere, in communities where sexuality is not culturally suppressed (and exploration is actively encouraged), around maybe a third are bisexual, and a quarter to a third are gay.
Completely straight people are in the minority among furries. Once you can get past the whole need for your partner to look strictly "human", you get a lot less attachment for needing your partner to be what you were told you ought want.
I fully expect without the cultural programing of expectation of "normalcy", we would end up a lot closer to the furry paradigm. Which is "really fucking queer".