Not so long ago it was normal for people to live in perfect bliss munching bugs & berries and the occasional carcass–maybe even cooked, but not necessarily. Electricity existed primarily in the sky, running water had fish in it, etc. Everything we have right now is more comfortable than all that, but there is plenty of debate to be had about whether it is better. So unless we manage to turn the planet into Venus, I expect the furthest humanity will “fall” is to a state of beast-in-harmony-with-its-environment. Nobody will know their place, because everyone will simply exist in it.
All the freedom from religion we experience is precisely because the freedom was absent for our ancestors. Similarly with our individual political freedoms. Point is, stuff’s gotta suck for an awful lot of people before those who remain will agree to fix it. It’s just cycles. Smothering the kids in their sleep eliminates them from the mass of those who must suffer the abominable conditions humanity eventually rises from. If it falls to them to suffer, then they will suffer. So what?