Did we expect it to grow forever?
If not forever, but if 200-ish becomes a norm, it would be super awesome. Now, it is like, “Awesome, I know this, I know that. I need to learn that.” “Hold on, time to die.”
I assure you many aspects of a society where 200 years old becomes a normal life expectancy would be a hellscape and not "awesome." We already currently have a massive societal and economic problem with aging populations as things currently are.
Come on wouldn't it be great fun with a dozen diseases, broken hip bone, shitting in diapers (if one can afford) people celebrating their 177th birthday. Seems people would sacrifice their first born if such dream life is guaranteed.