It would seem that erm i it wasn't in the interests of one's ultimate reproductive success to be too easily satisfied too much of the time  because remember, it's a question of relative reproductive success an and the individual that gets that little extra is  is effectively gonna be, gonna be the one selected, so yes I would think that erm it's probably naive to think that natural selection would, would make you feel er satisfied and content all the time it would probably induce erm a state of mild chronic discontent which is I think what most people actually experience in life  