Something that I picked up in your post that I find interesting... I'm also a really socially distant person. Ironically, I'm much closer to people who live much farther away. I'd assume it has a bit to do with the fact that we don't see each other much and therefore can't get sick of each other so when we do get together, it's only good times. The funny thing that I found interesting, however, is that all your examples... are what I'd PREFER to have happen. The response to your factoid... not so much, but I don't mind when people get shitty with me like that because I'm usually more than willing to get into a battle of wits or insults. I just love to argue. :D
When people say they'll call, I'd prefer they don't. Sometimes I'll not answer my phone and say that I didn't hear it (I'm a shitty person). It's not because I don't like them, but because I'm really VERY closed off and private with people I care not to invest significant time or feelings to.
And I certainly, more often than not, would be fine with someone forgetting plans with me. Just means I get to lounge around and do my own thing.
I prefer to be alone 99% of the time. I don't want a girlfriend. I'd be more than happy without MOST of my friends (yeah there's a couple that I'd keep around to keep me sane). And I'd be happy to never go hang out.