Overpopulation

How should overpopulation be dealt with?

Natures natural adjustment mechanism is disease. But that is being interfered with. People are living longer than ever due to advancements in medicine so much so that it isn't sustainable anymore.

overpopulation is everywhere a problem
ok, maybe not for the ulra huge countries like the US, russia, canada and kazakhstan but everyone else suffers from it
nonstop reproducing idiots is why european social systems fail
you can't even get out in the nature here because every patch of land has been idustrialized and is off limits
my solution would be cutting the welfare for all the families who get more than one child and let these leeches die off