I don't disagree that this is probably the best time to be alive on average, but the standard deviation is pretty enormous, and I would argue that it might not be the best time to be alive in all places.
Still statistically better than a random human being in 3,000 BC.
And of course, we don't live in the best possible universe; but on average, a random human's odds of being eaten by a figurative grue monotonically increase as you go backwards in time.
Humans don't live alone in the woods--not now, not 5,000 years ago (nor 45,000 years before that). They band together to modify, control, and tame their environment.
Now, you might miss your devices, pastimes, and widespread sanitation...however, from my understanding, humans don't typically worry about malevolent grues.
https://en.wikipedia.org/wiki/Anatomically_modern_human#Mode...