Age is what you make of it. I shoot trap with a gentleman that just turned 90, you'd never know he was that old, and usually beats me.
I have another friend that is my age and you'd think he was 100, slow, bent over, half deaf and depressed. Hard to hang around with him.
I turn 74 on New Years Eve, feel good, can do about everything I could do about 20 years ago, but a little slower.
Health is a BIG factor in age, it's something you have little control over unless you abuse it with wine, women and stupid stuff.
Just lost two high school friend over the past two weeks, but had a cousin who just past at 90.
Bottom line, enjoy the every day you have with the friends you know.