Do you expect your child(ren) to live a better life that you have lived? Better seems a rather crass and simplistic term, given the infinite characteristics by which a life can be measured, but I am really tired so it is the best I can come up with right now.
Consider your life. Is there any glaring issue that you see as "wrong" in your world? Small issues? Assume now that your grown child(ren) have lives in which those issues are "fixed." Would you be happy for your child(ren)? Would you be proud? Would you feel threatened? Jealous?