I agree with all you are saying but I have two people who have not yet reached "old age"
My son-in-law has stage 3 T cell lymphoma ( non Hodgkins ) and his prospects are looking very poor. He is only mid 40's.
I also have a friends daughter in her mid 40's who has had a double mastectomy and they have now found cancer in her spine. Once again, prospects very poor.
I feel extremely lucky to have reached the age of seventy two and would like to go on longer but if that is not possible then I have not been robbed of my life. I've enjoyed every minute of it and will continue as long as I can.
Count your blessings. Many people have not made it this far.
Alan.