I think nursery days for babies and little tots are too long.
Some parents are prepared to live quite frugally to be at home,some prefer a certain lifestyle which requires two salaries.
On the other hand,if mum gives up work for several years and the marriage/relationship fails,she is in a stronger position financially if she has kept her job,which will benefit the children.
Having a first child also changes perspective.
Parents may have commuted daily and were content with their surroundings ,but now desire better surroundings /schools etc. for that child.
At the end of the day,it is up to the parents to decide,but I think that childcare within the family and playgroup is best,if it can be arranged.
Parents who strive to provide for their children in the best way they can ,should not be criticised.
However,those well off who don,t wish to give up their posh cars and fancy trimmings are quite selfish in my opinion.