As far as sexual orientation, since we have a very small gay population in BFE, it's kind of hard not to notice.
Slight correction. You perceive it as a small population, but it's probably the same percentage in ALL groups. Just stands out more in smaller groups (small towns) when they do come out, because they're reluctant to come out when that can mean being bullied or shunned by their town's elders. It's also harder to come out as gay when there are fewer gays to actually go on dates with, dances or proms. By default they have fewer choices of mates in small towns.
Sure, I know ranchers value the breeder just as much as the spawn. Same reason guernseys aren't allowed to breed but they're kept lactating anyway, by milking them constantly----their milk is more valuable to humans than the baby cows they're meant to be nursing.