God is everything so he can't have something like a wife or girlfriend since they'd also be just him too, he's just the top class masturbator in the universe.I'm pretty sure the world's most popular god, as imagined by straights, would best be described as asexual given His lack of wife, girlfriend, etc. Even His earthly son didn't have a romantic / sexual partner (overtly, at least).
This is unlikely to be true. They probably didn't like gay people for no other reason than that they were a) rare and b) different. For much the same reason, left-handedness and red hair were often viewed negatively, too. For instance, the term "sinister" comes from the root for "left-handed".
The left handed thing is because back then there was no toilet paper so people would wipe with their hands and most people are right handed so they used their left for it but some who would be left handed would still be taught to use their left hand and they would also use it for all other stuff too and that'd cause illness and contamination so they tied it to them being evil rather than to germs because they didn't know any better.
And there's tons of verses in the bible about being fruitful and multiplying because they needed kids to fight the philistines and all other random enemies of the time.