As someone who has been married for most of my adult life, I am guilty of not always including my single friends and peers in our social life. But that is because I think that they would be bored to death by us! We have a hoard of young children, rarely eat out, or vacation, or watch edgy movies, etc. I figured I was doing them a favor only hanging out with them at lunch. Maybe singletons would enjoy an evening of dog walking and yard work with us.