JenniferEccles I think growstuff has already pointed out that if you live in this country you will have benefited from the social and physical infrastucture those who are or have been employed have paid for via income tax.
But, setting that to one side, what exactly do you think should happen to struggling families who, by your reckoning, are irresponsible because they have insufficient income to afford the basics for these supposed great hordes of children? It appears that you believe society as a whole has no obligation whatsoever to provide for families in such a situation. That it is just "hard luck" if those children cannot be properly, fed, clothed and housed. That it is desirable and necessary for them to pay for what has been described by some as the fecklessness of their parents. And how do you think these underfed, poorly housed and clothed and under-educated children are likely to end up? As upstanding citizens who are grateful to this society and who will work willingly and hard to contribute to it?
Or perhaps you believe that their children should be taken away and put into "care" (that would be expensive and doesn't have a great track record), or even that some women or men should be sterilised (there's certainly a historical precedent for that).
In reality, there are very few families containing large numbers of children, although according to right wing newspapers, you would think the country was overrun with them. The average number of children per family in this country is 1.7. On a personal level, I don't know many people who have more than two children.
In 2013, in an article about welfare provision, the Observer reported:
"To quote the Economist: "Though most of them seem to end up in newspapers, in 2011 there were just 130 families in the country with 10 children claiming at least one out-of-work benefit. Only 8% of benefit claimants have three or more children. What evidence there is suggests that, on average, unemployed people have similar numbers of children to employed people ... it is not clear at all that benefits are a significant incentive to have children."
These days many working people - even people with professional qualifications - can hardly get by, even with two incomes. Do you suggest they never have children? Have you seen what is happening in Japan and China where people have been discouraged - or forced - into limiting their families? They now have a massive problem with too few young people to provide for the growing number of older people.