I am an introvert

I'm an antisocial asshole.  At least sometimes I feel like one. I was at a semi social occasion and truthfully I didn't want to talk to anyone.  So I pulled out the ear buds, sat in a back corner and jammed out and read electronic magazines.  If someone approached me I would remove them and talk with them, but I guess it was clear I didn't really care to visit.  I don't mean to be an ass or look like an ass I am just an ass sometimes socially.  Or at least that's what I'm told I am.  The fact is I go a lot of place and do a lot of things and am around many people I don't really want to be around for my kids to be involved in certain things.  I just really don't care to interact with people sometimes.  Is that so wrong?  The irony is, although I get branded "ass" publicly I will bend over backwards to help a person.  I'm not selfish, I just like to be left alone sometimes.  I am an introvert plain and simple.