if you have subsidised childcare ,who subsidises if? The tax payer so ultimately your paying another way via your taxes and so are people who don't even have childcare.
This thinking betrays a huge lack of understanding of economics. Free/ heavily subsidised childcare pays for itself, hence why most developed countries have this policy, not out of the goodness of their hearts. The UK is an outlier, with the highest childcare cost: average salary ration in the developed world.
More people working = higher tax take, lower child poverty, lower demand on services/ benefits, better health, high productivity, larger economy, more new businesses set u and growth opportunities, better long-term outcomes in terms of skills not being wasted/ unintended long-term unemployment as people struggle to rejoin the workforce at the same level, better equality between the sexes which benefits societal stability, reduces the percentage of marriages than end, reduces child poverty, increases social mobility, also a better balance of women and men in senior positions results in better governance and higher profits for companies therefore again more tax revenue... etc.
The question is simply do you want a positive reinforcing spiral upwards, or a negative reinforcing spiral downwards?