Does being a parent make one more invested in the future? It may do, on the flipside of that opinion is the fact it could make you only interested in your own progeny’s future at the expense of all others.
Does being childless make a person less worried about the future? It may do, on the flipside it could make you more motivated to build a different kind of legacy in the world.
What I do know is that generalisations and attempts at one upmanship based on flimsy unprovable summations is wrong, shows a significant lack of awareness and will crumble at the most cursory examination.
All lives matter, everyone has value. The second that any stigmatisation of any group happens, moral high ground disappears.