How long do narcissists live?

My personal belief is that narcissists will live a long life because of their selfishness and the way they can manipulate others to do their bidding. They don't have a conscience and can probably sleep well at night, thus they have everything going for them for a long and unhappy life. My NPD father is 87yrs, he has a wife who does everything for him, and he sits in his chair looking like an empty old box with hard, unyielding eyes. I don't feel sorry for him, he has played too many games and I find him quite horrible.