Substantive.
Try this, I'm genuinely curious: if you were going to be born as a random human somewhere on earth, what year would you prefer that to happen?
oh god are we really doing this? just ignore the accelerated decline of virtually the entire world because we have medicine and Netflix?
If I can choose the US specifically, then sometime in the 1950s. I think Baby Boomers in the US will go down as the single luckiest generation on earth in terms of socioeconomic opportunity.