Is Human Reproduction Un-Ethical?

[Brometheus]

Hear me out.

1. If no God or after-life exists;
   
2. There is no other point to being, than what we make of our lives here; 
   
3. And, if some children will find in this life great fulfillment, while others find incredible pain and suffering- which we cannot possibly foreknow; 
   
4. To wager that a child will enjoy life, to a degree greater than the sum of the pain and suffering;
   
5. Which is to wager with somebody elses life, potentially exposing another human being to immense grief and pain;
   
6. Which is needless, considering the fact that their is no reason for us to be, or to continue to exist;
   
7. And, that the, act of having children is not necessary for any purpose other than our own gratification; 
   
8. Thus, having children is a selfish, greedy act which can impose great pain on another human being;
   
9. Having children is thus un-ehtical and immoral. 
   

What do you think?