I'm an extreme introvert and need a good amount of alone time whenever I spend a significant amount of time around other people (wife and kids excepted). I thoroughly enjoy those moments, whether it just be me or me and the family. If I'm just by myself for an extended period of time (a few days), I'll start to really miss my wife and kids and want them to be home with me, but very rarely do I ever long to be with a group of people, large or small.