I hate that having children is apparently the only purpose anyone has in life because I don't have children or a purpose in life and I'm pretty sure I would be even more depressed if I had children.
Note that I am not arguing that children is the purpose in life for everyone. For some it is, for others it is not.
I believe that the majority of child bearers are "on program" driven by their biological imperatives. I believe that among the voluntary non-children people (of which I am one) there's plenty of values, goals, hopes and aspirations. In fact, for me, life is so rich that that is why I do not want children.
There's billions of people all over the planet to carry the burden for me. Sure, if we were in an extinction scenario, I might reconsider, but we're far, far from it.
So while I continue to enjoy life and full freedom, I'll let the people who are "on program" deal with the poop and worry for their offspring.
That does not, however, mean I do not have to care about people. If anything, the fact that I do not have children, gives me the opportunity to care _more_ about people in general, than the people who are busy with raising children.
Hence my idea about a non-profit, that will outlast me for some time.
Living only for yourself gets really boring. Children give you a life-long purpose. That and the evolutionary purpose, or drive, of life is reproduction.