On Juraian lifespans, I think it depends on whether they have a bond with a tree. Also on access to the medical tech of the Galactic society.
Kiyone Masaki (Tenchi's mom in the OAV) died of old age at 248 years, while still looking like she was in her twenties. Her older sister, Minaho, is still going strong and has a tree ship of her own even if she seems to spend most of her time on board Seto's ship. Yosho is over 700 years old and looks early twenty-something when not using a disguise field, largely because his tree hasn't lost power despite being rooted on Earth. Seto is on the high side of 5000 years old, possibly twice that as different sources are giving me different numbers. (There's this whole Galactic years vs Earth years lampshade hung on some of the different numbers given for some character's ages)
----------
No, I don't believe the world has gone mad. In order for it to go mad it would need to have been sane at some point.
Kiyone Masaki (Tenchi's mom in the OAV) died of old age at 248 years, while still looking like she was in her twenties. Her older sister, Minaho, is still going strong and has a tree ship of her own even if she seems to spend most of her time on board Seto's ship. Yosho is over 700 years old and looks early twenty-something when not using a disguise field, largely because his tree hasn't lost power despite being rooted on Earth. Seto is on the high side of 5000 years old, possibly twice that as different sources are giving me different numbers. (There's this whole Galactic years vs Earth years lampshade hung on some of the different numbers given for some character's ages)
----------
No, I don't believe the world has gone mad. In order for it to go mad it would need to have been sane at some point.