As I suspected, it is the act and the lust for the act that is considered sin, not merely the lack of desire toward the opposite sex.
Those kinds of persons have always existed, they lack strong sexual desire, certainly for the opposite sex.
They were always the unmarried uncle or aunt in the family.
Sometimes they were referred to as the spinster auntie or the perennial bachelor uncle.
Many times we looked forward to their visits for they oftentimes brought gifs for the kiddies as they weren't spending their money on their own families!
Now, however, society pushes them toward same sex affiliations as society cannot imagine life without sex!
Very good points. There have probably always been many people who really weren't interested in getting involved, so to speak, not only sexually but emotionally. They often enjoyed the company of their brothers and sisters and their families, but either had other interests or just simply personalities that weren't going to be comfortable in that life.
And now in our sex-obsessed society, they've all been forced to announce that this means that they're "gay." Look at all the effort modern literary "scholars" put into trying to prove that one or another early writer who never married but had friends was either actively homosexual or secretly lusting for his friends. Said writer would have been shocked and disgusted, but now, since sex is all, this is unthinkable to the modern mind.