Living to 100 is great if they are active but for someone who is bedridden for the last 5-10 years, not so great.
People who live, grow up, and work their farms all their life stay active as well. Some may even play sports or go to the gym. I personally just ride a bicycle and walk my dogs to try and “not let the old man in”.
The people who work in offices and sit most the day are at the most risk of a shortened lifespan. It’s an easy rut to fall into.
Just saw a picture of Jimmy Carter at age 99.
I do no want to live to be in that condition.