I'm a goal oriented semi-social introvert (yaay for a new made up term!)
I don't look for validation from others for my personal beliefs and I really don't care if people think I'm right or wrong. Although I love getting opinions on things (Like my texture pack) because I want constructive feedback to improve my abilities. But that could be in part that I'm probably borderline narcissistic. I really only care about improving myself, but I don't care what *you* think about the outcome, that's my business. I also really don't socialize for the sake of socializing or really care if you think I'm wrong. But, I do always strive to improve myself and my abilities so I enjoy getting critical constructive feedback.
To me socializing for socializing's sake is a total waste of time. But, I won't deny it completely, I just avoid it because I simply just don't care at all. So, while I'll go out to eat with my friends or see a movie typically I'd rather be at home working on my texture pack, playing minecraft, studying, or doing something I feel benefits me directly with some sort of end-purpose or outcome. Doing things like "hanging out with friends in the backyard with a beer" is completely pointless (and simply boring) so I have no interest in doing it what so ever. Now, if me and my friends are working together to a common goal of some kind? Totally on board.
Socializing just isn't a priority to me, I have no real social anxiety of any kind anymore, I can typically talk to just about anyone and from my perspective I seem to be a friendly kinda guy as far as I can tell. I just don't go out of my way to socialize. You will never see me in a bar, a club, or just wandering aimlessly around. Basically, whatever I'm doing needs purpose. It doesn't even have to be purpose specifically for me, but it needs purpose else it's pointless.
Well, once the dementia sets in I might do some more aimless wandering.
EDIT: I also took that personality test you mentioned about a year or 2 back just for fun, I came out a strong INFJ (apparently the rarest type, less than 1% of the total population.)
Seriously Ray?? I'm an INFJ also!! I've never met another INFJ. Because....you know...we ARE the title.
Supposedly, we are the ones who can supposedly communicate with otherworldly beings. LOL woot! Let's be ghost hunters!
Now...why can't I get those darn ghasts to listen to me?!
Well that's odd because I'm an INFJ as well.... =D