Vault101 said:
1. selfish to WHO exactally? who am I harming in not having a child? who am I benefitting in having a child? both answers: myself...oh and my partner
I believe it has to do with your Genome. Your family expects you to have children because, if you don't, your family tree ends with you. If you do, then you pass the genome down another generation, and (as far as evolution is concerned) you are no longer important. By not having children, you are actively harming your genetic line, and betraying the fundamental core of evolution itself that made us what we are.
Of course, that only applies to smart people. The stupid people are being actively selfish BY having children. They are ensuring that their flawed DNA continues.
Also, I am assuming that you are smart because, well, you sound smart in your OP (and because you have often been a voice of intelligence and interest in other threads). Therefore, I hope that you do choose to have at least one child - because your DNA is important to the continued evolution of the human race.