I agree. I have seen similar things, even with people my age or younger. In pre-covid days we went to a nursing home for Christmas, and I was surprised to see the number of people in there 50s and 60s who were there. I see things like that and cannot help but wonder "why not me?"
I just hope not to get bitter as I physically deteriorate, and instead appreciate the times that I was active, even when I am no longer active.
Longevity (Average age) in the USA. Depending on the source these numbers vary slightly.
Male: 76.1 years - Average life expectancy of a US male (at birth).
Female: 81.1 years - Average life expectancy of a US female (at birth)
Male over 65: lifespan expectancy is 18.1 years.
Female over 65: lifespan expectancy is 20.6 years.
Point is that this is average so you would see people dying earlier as well as later. How they die is based on many factors including genetics, diseases, natural disasters (including war), etc. Very few are lucky to die, while being healthy, and get a heart attack. So, what you see is the natural decay of the "machine" as it ages. Many do not take good care of the "machine" and so suffer before kicking the bucket.
I know two cases where a healthy person died peacefully. My father was a chain smoker but not even a hint of cancer. In the morning he got tea in the bed, my niece went to get the newspaper. When she came back, the cup was on the side table and he had covered himself all the way to the head and was gone - very peacefully.
My neighbor, a pastor, a wonderful man, thin, tall healthy 92 years old. Walked every day even in cold weather at 9:00 PM. A few weeks ago, he came back from this walk in the cold at 8:30 PM, went to the bathroom, came out, and told his wife that he is not feeling well. Before the nurse could come (in our CCRC we have 24 hr RN) - 5 minutes and he was gone.
I know a couple in my Mother-in-law's nursing home who had a great philosophy. His wife passed away - Dementia. I went to console him. He said, "Look when God sent us, he put in the return ticket in us. We don't know the date of the return journey and the vehicle of the journey." We could die quickly with a heart attack or suffer for years with Dementia, Parkinson's, or whatever. He died in 2 months with COPD.
So, take good care of the "machine", enjoy life, and accept the reality that we all will go so be kind to each other and ourselves. We are not taking anything with us, but we will leave a memory by our actions that people will remember. Some for centuries, some will say - good riddance.