Seems like simple enough utilitarian ethics: good comes of increasing the supply of donor blood, not worrying about the motivation of the donors. While I do be

Seems like simple enough utilitarian ethics: good comes of increasing the supply of donor blood, not worrying about the motivation of the donors. While I do believe more people should donate and it's a trivial thing one can do to save lives, I also arguably have a selfish reason to do it: blood draws keep my iron levels stable, because my body doesn't otherwise process and eliminate it at the rate it should.