I agree but preventing parents from providing security for their children is a form of harm. One could then argue that if all wealth were recycled, the state would be so strong that parents would feel even safer for their children in such a system - but then you're back to state vs. individual, socialism vs. freedom, etc., etc.
Yes, but if you argue a policy, even status quo, you're responsible for it's externalities. Wealth accumulation over generations creates real harm too.