Being shy doesn't mean you're ani-social. Shyness is benign; anti-social behavior is malicious.
Although I don't know that I'd go so far as to say it's "malicious," I agree with this overall sentiment. There's a difference between being introverted and being wholly opposed to spending time with others. I do think it's unhealthy to never interact with others or to deliberately hide from all social settings, but there's nothing wrong with preferring your "alone time" over company.
Spending time with others doesn't have to involve developing life-long friendships or becoming committed to other individuals. Do some volunteer work. Join some clubs that meet once or twice a month. Take some continuing education classes through your local community college or town recreation center. Anything like that will provide you with opportunities for human contact without requiring you to devote yourself to others. And maybe that type of structured setting would be more comfortable for you than a cocktail party or something where everyone is expected to mingle.
(Of course, it sounds like you're already doing things like that, so this is general advice for people who are feeling more restricted.)
Its not that I didnt like her. Its that I knew we werent going to be long-time buddies and I didnt want to waste my time with shallow conversations. My husband came out with the "You want friends but you dont give people a chance" bit. To me, I work far too much to waste my play time, and I could sense that there was no connection.
I do feel that that part of what you said is a bit troubling. It's fine to not want to enter into some intense relationship with someone, but that doesn't mean you should sacrifice being polite and decent to others. I think maybe you're misunderstanding small chat and its purpose. :/ Besides, it's those little interactions with others that help us understand the world better. You might be missing out on some great conversations -- or hell, some great people-watching opportunities -- by refusing to engage with them. There's no occupation that's so important that you can't spare a few minutes here and there to be cordial. So in that particular case, I do think that was an unhealthy reaction, but I don't think it makes you mentally ill or anything.