Good.
Disconnect emotion for a moment...
Societally speaking, those with no children benefit massively from the labour and hard work of parents.
We aren't indipendant people capable of existing on our own. We exist because of the support and care of the last generation of parents and we all get to live and grow older in a functioning world because of the next generation of parents are going to provide the people that keeps society going when we can't.
unless you were born in a cabin in the woods with no one around you, then you have other parents to thank for the hard work of raising the people who keep the world around you running.
So yeah, given that parents get very little back as it is for such an essential task and effort of labour. I am quite happy with them getting a few bits of benefits or preferencial treatment here or there.
(Also I know some people can't have children, I'm sorry for them, it is sad, and obviously not their choice to not contribute to the next generation directly, but it doesn't change the fact that their life is supported by the parents in our society)