That pretty much nails it for me. Well thought post, thank you!I have chatted with so many men who have followed the same basic trajectory:
1. They had no desire for bi sex before marriage. Then their wife loses her sex drive so the guy turns to porn more than usual.
2. He eventually bores of the usual stuff and starts to explore kinkier scenes, often cuckold (which has bi elements), pegging and trans.
3. They internally defend this to themselves as cuckolds are being “forced” to the gay acts. Pegging is with a woman, so it’s still straight. Trans are essentially women but with cocks, so it’s still not truly gay.
4. Eventually they seek bisexual porn, again justifying it as there’s a woman in the scene so that makes it “less gay”
5. Acceptance of gay porn and desires of being with a man because it’s much easier to find a willing guy. They would prefer it be with a woman but Men who post online ads for sexual encounters with women may never get a response whereas man to man encounters are easy to find interested partners. Essentially it’s like they have no choice but to turn to other men.
Perhaps some of this desire was always in there and would have come out eventually, but that exact path is far too common to be coincidence.