The main argument hasn't even been addressed.

People not having children gives us an aging population. This means huge numbers of old people with very few young people to take care of them.

We'll have millions of incredibly lonely, isolated old people, sitting in their homes or unattended in hospitals. (And this is what your old age will look like too).

This is one of many reasons that depopulation isn't good. Which is why it's important for people to have children.

Address the actual other side of the argument.