Or they're bi. I grew up ultra religious and the choice explanation made more sense to me because I had both homo and hetero urges, and I assumed it was the same for everyone (I thought of people who claimed otherwise as self-righteous). In my mind at the time homosexual urges were just part of people's sinful nature they had to overcome. The whole thing only seems so incoherent from an outside perspective, which I was fortunately able to arrive at after experiencing the world more.