[5thaccount]

I think it is simpler than that - we like most people because we really don't know them that well, and the inverse si true as well.

We all have quirks that other people might find distasteful. As an easy jump off point, the pr0n habits of people vary wildly, and I'd wager if everyone knew what someone was into... The more you know about many people, the more chance there is that a part you uniquely find distasteful will emerge.

On top of that, the modern world in general, and SM specifically, has melded the public world, the private world and, most annoying of all, the inner world into a single, undifferentiated miasma. All these posts I see of people who can't work with Trump voters, or the religious right, or gay people or whatever shows how this melding causes real problems, even if it alleviates others.

We now know too much about people, and that isn't a universal positive.