Said topic.

I felt comfortable with a few crowds and like quiet home.  When traveling around with my mother on her vehicle, she usually turns off the radio.  During my bus ride to/from work, I have my hearing aid configured to mute.

For the majority of my daily life to this point, I would say that I was very comfortable being alone and reserved. But right after I have any sort of infrequent positive social interaction, I seem to yearn for more after it is over, even though during the interaction I am often awkward. Though this only really applies to smaller settings, if there is a huge family gathering with a bunch of people who all want to talk to me, I just hate that in it's entirety and would be very content being alone.

So a little of both, which I am sure is the case (to a certain extent) of most people.