Just because an action is not identified by the do-er as being selfish does not mean that at it's heart it is not in the individuals best interest.
Sorry - have read 'the selfish gene' and was completely convinced. It would take a book of equal size and gravitas to convince me otherwise.
I guess I am also a bit swayed by our obviously opposing political views - you have made no secret of your viewpoint and it's fair to say that it is pretty different from mine