You don't need child care when women aren't in the work force.
What if women genuinely want to have identity based on what they do? Full time employment is probably the thing which has to go in favor of reproduction, it's akin peonage in that regard.
How would you explain that a 25 years old male can be a first developer employee in a start-up, but a 25 years old female can't be a talent acquisition manager there?
And then fail to crop up a period of inactivity in their career to have a child?
I'm just not sure how it works in practice.
And yeah, they would be taken care of by evolution.
Especially hard if you expect mother to not have her life while having all these kids, who are then going to depart their home and make her life even more eventless.
Again, the majority of people in the West are better off than the majority of people anywhere else, affording children is a matter of life priorities.
Israel kind of shows that having the life priorities that you desire is possible. But I'm not sure how to do that in practice, or even if it is feasible until the current population Ponzi scheme wears off and then a few generations pass.