"There is absolutely no nobility in deciding to remain childless for purely selfish reasons."
Ah, I see. And who is the judge of that, Antoninus? You? Me? The Elders?
And...is "nobility" required to cast your vote? My wife and I are childless. Why are we childless? Do you know? Would you insist that I explain the reason to you before gaining full citizenship? Is it your business?
Not every childless couple is childless out of selfish reasons, dear Antoninus. And their reasons for being childless are of no concern to you whatsoever.
Good for you for having children (assuming that you do). That is your business. My childlessness is none of your concern, nor is it the concern of anyone other than myself and my wife. Your assumptions are unwelcome.