I guess there are scenarios where I have free time, but it’s less than 30 minutes daily. In some evenings I can fight the exhaustion of a full day of child care after putting them to sleep to stay awake and get some free time, taking into account of being very tired when they wake me up quite early.
It probably gets better when the kids are older, mine are little.
Two humans are just too few to take care after two kids. Originally humans were not isolated to 4 person families like they are today. The whole tribe was looking after all the kids, sharing different duties and having a collective schedule, similar to Kindergarden today, but the whole day.
After that a few generations lived together in one house, still having less impact on the actual parents. Then we got our 2 parents + kids family model where in the beginning one parent was doing childcare full time.
Arriving in todays society, where both parents need to work and do the child care on the side by themselves after parental leaves from work are over. This is from the age of 1 where I live, but e.g. in the U.S. it’s right away.
Obviously this most parent hostile setup in the society of today, adding also some financial disadvantages, is a big reason this societies demographic issues.