I think that resentment comes from feeling like you "wasted" your life to make someone else's life better in the future. It's obvious to feel that since we're a

I think that resentment comes from feeling like you "wasted" your life to make someone else's life better in the future. It's obvious to feel that since we're all selfish to some degree. But ultimately it's self-sacrificial for the betterment of others, which isn't really highlighted or praised in American society outside of military service.