but only few parents live upto parental duties — i.e, giving nurture, care and education.

You’re wrong with that assumption. So what, you’re saying most parents are irresponsible?

It's not assumption though, I have witnessed parents who shouldn't have had kids, these undeserving parents bring innocent lives here, and ruin it.

I don't believe in God.

Fair enough, if you don’t believe in God then that verse won’t really mean anything to you.

Yep, that's correct.

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But regardless, humans are created to multiply, otherwise you wouldn’t even be here in this world.

Sounds about right.