So you met one guy with a lot of chronic health problems and assume that everyone else in his age group is similar? Or if not then I'm not sure what your point

So you met one guy with a lot of chronic health problems and assume that everyone else in his age group is similar? Or if not then I'm not sure what your point is. People who miss a lot of work and make excuses for being belligerent don't make the greatest employees, but there's not as much correlation as you think between that and age. I feel like you really have given a clear answer to combatentropy's question "why do employers discriminate against older people", but it's maybe not the answer you thought you were giving.