I agree with Khada.
It's not a matter of whether it should be capped or not, run by the government or not.
It's that PEOPLE should show restraint.
I've said before, having triplets is fine, adopting extra is fine.
As for the argument of as many as they can take care of:
Because a man & woman have large incomes doesn't mean that we suddenly have more room or food, it just means that they can buy that room or food more easily.
Which is great for their children but is essentially puts more demand out from others.
An extreme would be; the scarcity of food is more apparent and therefore richer families are able to buy it whilst poorer families cant.
This is basic laws of 'the Market', as something becomes harder to obtain the price goes up.
And although the above example is an extreme one.
Things can only escalate unless the PEOPLE show restraint.
I'm hearing people saying I came from a large family (I imagine 5 kids) and I want to have the same.
Well that there's the problem, if each child has 5 then Bam! that's 25 new kids.
Each one of those has 5 then that's 125 in 3 generations.
Unlikely sure, but clearly avoidable.
My mother came from a 8 child family, So, YES, my ancestors are responsible too, but I'm a brother of 1 (2 kids family) and plan to only have 2 children. If each of my aunts had 2 children, then that's 14 kids. That's still a 'large family' you just need to socialise with your cousins.
(Although admittedly we don't)
It pretty simple I'd have thought.