The alternatives are:
Victim. "I am too weak and poor to help anyone but I expect people to help me." This belief corrodes you.
Stoic(can't think of a better word.) "I don't help anyone and therefore I don't expect anyone to help me". Well, better than the victim but ends up passing up many opportunities where others are genuinely ready to help.
Abuser "I don't bother to help others but I take advantage of them" - becomes obvious very quickly and you are ostracized and hated.
Doormat "I help everyone but because I don't have healthy boundaries, I end up attracting abusers and victims." Gross.
The "best people" are clear and confident with their boundaries and generous with their time and resources when people are on the right side of the boundary. I see this a lot with truly successful senior managers and businesspeople, for example.
Even in politics, when a candidate runs for office, they want to tell stories of "X came to me and needed help and I really took the time to hear them and help them (kindness). Then Y came and they sought to rip us off and I told them to go fuck themselves (boundaries)." We seek that as species, we expect that out of the best among us, and therefore we reward those who operate from this place (and it's good for lots of other reasons.)