How very selfish of you. There is no real benefit to existing over never having existed, so having children is always doing them a disservice. It's such a natural part of human existence that people rarely think about it being an action which needs justification.
Bringing children into existence is like playing Russian Roulette with the gun aimed at the heads of your future offspring.
So. How sure are you that the bullet won't fire?
I will be the perfect parent. One who protects his children without fail. It is a rare thing to achieve perfection, in this life