I'm definitely an introvert, I think the last time I took the Briggs-Meyers test I came out as ISTJ. I don't mind being around people, in fact I enjoy socializing, but I don't like being the center of attention. I don't feel the need to seek out others, and am perfectly happy if there is no one to socialize with. For example, in taking up golfing, I rarely plan going with a friend or group (I'll happily go if invited). But if I decide on the spur of the moment to go I likely won't call anyone but will just go play by myself and be perfectly happy.
Introvert/extrovert has always interested me from DW and I's family dynamics. My father and DW's fathers were both introverts, while our mothers are extroverts. I have 6 siblings, 4 are extroverts and 2 others are introverts. on DW's side she and a brother are extroverts, while another brother and sister are introverts.
One of the nicest compliments paid to me was by the then 18 year old daughter of friends. We were on a camping trip with a group of families and the teens got into a discussion about the parents. My name cam up and they all said how quiet I was, but the young lady added "Mr Jollystomper is quiet, but when he has something to say you better listen, it always makes sense", and they all agreed. I was shocked that they even noticed me - and honored that they thought of me that way.