Right?
Mark often tells me about one person or another when he's out and about who holds up a line or some such thing, that it was an old guy. Almost every time it is followed by "I think I am older than him". I spent most of my 20s studying and working in geriatrics. A common theme amongst the people was that inside they were not old.
It's part of the human condition, and not a bad part, I think. We, hopefully, gain wisdom and discretion as we age, but aren't we still 'us'? I still walk through the house breaking into song. I like to sing. I can't dance anymore but that doesn't stop me from making some ridiculous moves to music. I still groan at bad jokes as well as make them myself. I am me with more temperance.