Being old may be not a problem for many , but for many others getting old is...
We do not choose our genetics, and sometimes we do not choose or are not able to choose our environment and in many cases we are not able to choose what we eat...Look at an earth globe....And roll it , pick a country and thought about it... or look at any american cities and analyse its population behaviour...
I dont feel old at 72 because i was lucky with my genetics and environment and i am able to eat minimally well... And i can think ....It is result from my past choices sure but i was lucky enough to be able to express them in the right place ...
Others are not so lucky...
Getting old is not the problem, being old is.