No. If parents are working that is creating goods or services, they earn and spend that money, and this multiplies as it is spent across the economy: creating more jobs and goods and services for others. It generates wealth. Plus the childcare worker is also in work. Again earning money, and both paying tax that can be used to fund services.
If neither the childcare worker/ parent of the child work and instead the parent receives money from the taxpayer, this a net cost. Even if the amount given to parents was equivalent to the cost of childcare, it would still lower productivity, therefore the wealth of the nation, therefore lower GDP and GDP per capita further, lower tax revenue, and create the negative spiral I set out above where it becomes ever harder to fund.
It's just not realistic, from an economic perspective. Not atm anyway. The UK is part of the global economy and simply can't afford what you're suggesting. Our GDP per capita (even including all of the very wealthy people) is now 31st in the world, and falling fast. Overall GDP is fairly irrelevant to living standards so the often trotted out stat about being "the 5th wealthiest country" is irrelevant. By the way we are 6th already and will be out of the G7 before long if things continue on the current trajectory. The UK is not "rich" anymore, it is highly indebted, has an enormous trade deficit it can't fund, high taxes, terrible services and crumbling infrastructure and - crucially - not serious cohesive plan to fix any of this. Hence the "moron premium" being charged by the market now on Government borrowing and their desperation to get inflation down so that rates will fall because they are now (due to mismanagement of issuing gilts based on RPI+% 🤦🏻♀️) not inflating away debt, rather spending nearly double the education budget just on interest payments.
I don't disagree with you at all that the current social structure and tax and benefits structure and structure of work is very far from optimal economically, socially, or financially, for a great number of reasons. This is just one facet of it. And yes of COURSE I'd much rather have been able to spend more time with my children when they were tiny and not to have to go back to work at 6 months. Wouldn't everyone? But we also have to ask ourselves what kind of lives we want for our children as adults. And do we want them to have decent funding for education, and healthcare, and a functional economy when they want to start work?
If people want a decent standard of living for themselves and their children they will have to accept that the reality is that productivity in the UK has to rise. Otherwise they will continue to get poorer every year. This is a basic fact of the global economic system and a UK Government (of any colour) will have no power to change that. Societies in which everybody focuses on entitlement and there is no collective responsibility to also contribute to the greatest extent of your ability do not thrive.
We could change a great many things which would also help to prop up GBP, support growth and therefore make more money available for services, but neither the current Government or the opposition are proposing any policies that will make any significant difference to those things. So I suspect we'll carry on as we are, with managed decline and every-falling living standards and politicians tinkering around the edges with irrelevancies whoever is in power.
Again OP - sorry because obviously this is not the subject of your thread, but trying to answer the questions that have been put to me.