I'm simply making an observation, though I've been called far worse than "mean."

And that's kind of my point. I don't experience loneliness at any profound level. Along with that comes a set of behaviors and attitudes. Antisocial behaviors and attitudes, to be specific, which would normally be prevented or mitigated by a desire for human connection. You claim not to experience loneliness, yet you don't behave like someone who's never truly experienced it.

For example, unlike you, I only care about the opinions of others inasmuch as their opinions affect me directly. I don't care if you think that I'm mean, not unless you have something that I want - money, information or sex, usually - and your negative opinion of me prevents me from getting that from you. Likewise, I don't care if people are mean to me. In fact, I often seek out antagonistic relationships because I find them to be more exciting, whereas I find bonding to be pointless and boring. If I needed your approval for some reason (e.g. because you were my boss and I didn't want to get fired), then I'd become someone else. Few people in my life have any idea who I really am. Their validation means nothing to me.

In short, it seems to me like you do experience loneliness, but you're denying that fact to yourself.