You are mentally deficient. Why do you even want to have kids?
Because society says so? Because you are afraid of being alone when you are old?
In the first case you are just a brainless sheeples, so mentally deficient.
In the second case you are just a pussy, which is also a mental deficiency.
But there is also a third case. Maybe you want to contribute to the survival of the human race.
This is even more retarded, because you are sacrificing your personal well-being, for the hypothetical well-being of the human race, as if the survival of the human race is some sacred end-goal that we should all aspire to.
Protip: It's not. The human race's survival is important as long as it benefits me as an individual. Sacrificing yourself for the human race is a paradox. And only mentally ill people base their lives on paradoxes.