[purple_ferret]

True, but sleep deprivation seems like a constant throughout at least modern human history, so maybe on a relative basis, it's not so bad.

[the_af]

Since even early humans had to be parents, and many parents suffer sleep deprivation, I'm guessing it's since the time of cavemen!

[bigDinosaur]

Sleep deprivation makes me feel like a literal zombie, incapable of really experiencing life properly. It seems rather bad from that perspective?