If that's an issue for you then don't be a parent. Or have one of you be a stay-at-home parent. Or get a job with fewer hours.
The unspoken assumption here is that people without kids aren't doing anything outside of their work that might be considered "work". They just choose to spend their time on different things.
Oh I’d be happy to speak that out openly. And it’s easy to test: what are you doing that is so essential that it will ensure that there are still humans in 100 years, and how many hours do you put into this?
Haha, says the freeloader who expects the world to organize around their needs!
But you didn’t answer my question: what is your grandiose contribution to this world? What do you do for others, without which humanity would go extinct within 100 years? Some open source project to organize your music collection?
Raising the next generation of people who pay singeltons' salaries and make their lives possible is different from indoor rock climbing and slamming avocado toast, and relatively at least it very much is special.
You have a very curious view of childless/single people. Gosh, this must be the first time I've seen someone use "avocado toast" other than a parody of these kind of views.
And ironically, I actually spent many years volunteering as a scout leader and some youth computer initiatives shrug