Not just another robot

There is this guy I know, he is the most energetic, outgoing, insane, all over the place kind of guy I know. He is always walking around with the look on his face like he knows something you dont. And the look of "I love what I am doing". To be honest he kinda made me feel overwhelmed, in no way bad. I could only take being around him for short periods of time or I would not be able to keep up with his "insanity" The direction I am going towards is, here is this guy that loves what he is doing and it shows. 40 years old and acts like an ADHD 12 year old, its the best.
I see so many people on my trip that look like there 40 and act like there 80. When I hear people say "I am too old for that", I think "to old to live?" whats the point then.