I basically agree with everything you said. Breeding like rabbits is irresponsible, and unfair to children in first place. Coming from poor welfare family there's little chance they'll be successful in life...

But if goverment allows it - some people will abuse the system. Nothing we can do about it. Nobody will roll welfare back. So it's not much use to talk about it.

And even if there were no welfare - some people would stop, because right now welfare is their "salary", so the more kids the bigger salary. But some people would still breed like rabbits. For religious or other strange reasons. The kids would be literally hungry, but it would not stop them.