I have to say I've certainly benefited and it makes me quite happy to see the increased SP and the increased voting power that I can then share with others.
It is rather simple: the more powerful you become, the more powerful I become: the more powerful I become, the more powerful you become. The system on here creates this magical circle.
I hope to keep doing my part to help it move up.
The more you grow, the better it is for all of us on here.