"The government cannot afford to just hand out money to everyone who wants to sit on their arse and have 10 kids when the people paying the taxes stop at 1 or 2 because they can't afford it."
You know the single thing which has been proven to reduce the average size of families beyond the availability of contraception and abortion?
Further and higher education for women, and good career choices.
You make it sound as though all women would simply pump out babies until they realise they can't afford any more. That's simply not true. The women who have the biggest incomes and the most secure jobs also have the smallest families in the UK.
"The government can't afford"
Actually the tax payer can afford all sorts of things, including to provide more financial support to the minority of women who choose to have more than 2 children.
It would be more humane for the government to provide universal, high quality, free childcare and support for working class and impoverished women to continue in education and to be able to work, but instead they choose to use the stick approach, but making sure that women who choose to increase their family size while on a low income, experience extreme poverty. 'That'll learn them'! Except it won't. It will exacerbate social stress, abuse and dysfunction, which will result in more children failing in education and more social breakdown.
But that's Tories for you. Personal responsibility. Small state. That's the ideological agenda. Don't create a society which makes it easier for people to do the right thing. Punish people, including children, until they get on board.
So yes OP - universal credit is shit. And inhumane.