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You say people are egotistical and selfish to not have kids meanwhile at the start of your comment, you mention, having children was good idea so they could be used as working force — you realize how absurd that sounds?
Why absurd?
Why not? Not giving birth harms none, i.e, even if people decide to have no children for egotistical/selfish reasons, no harm is caused. Meanwhile, to breed kids just so they help you with field work is well you are literally creating a laborers. I don't know about you, but it certainly does not sound good to me.
That was one of the main purposes people had lots of children in ancient times.
Or may be, it's just that sex is highest pleasure available to men (not counting drugs), so they fuck and since there were no contraceptives available, pregnancy was the result.
If it wasn't for this concept of family, probably those people would starve, unable to keep all the daily tasks completed. Then there wouldn't be anyone here today to claim how absurd that was...
Lol, that's nice burn, but in my defense, I would be perfectly fine in non-existence.