Men are commonly expected to be stoic and not express such things and just "go about their day". If they don't, it's viewed as dramatic and over-expressive. It's interpreted as immaturity, imo.
I don't know what society you live in, but being stoic and masculine seems quite rare these days and is often frowned upon...
If anything, a well rounded worldview brought upon by age is conducive to making art that has a grander, more truthful (not necessarily more factual) statement.
Making things for the sake of making things will do. It doesn't even matter if you don't get better at it over time.
I still do this during early morning runs (when I have them). It definitely feels weird, but also a lot of fun. Most of the weird feeling indeed comes from "but what if they see me?"
(like Dolphus Raymond with his paper bag, engaging with kids may provide useful cover for playful adults)
"When Kelvin looked through the eyepiece he saw what was undoubtedly the phenomenon that Maxwell had described, but in addition there was the image of a little man dancing about ... Maxwell had achieved this by the addition of a zoetrope ... Kelvin could not help asking: 'What is the little man there for?' ... 'Just for fun, Thomson.'"
https://www.cambridge.org/core/books/fourier-analysis/ode-to...
I would run down the street as a kid. If I did that today, it would look weird.
I would be sort of silly and upbeat about a lot of things. But as you get older, people expect you to talk slower and more seriously.
And so on. A lot of it has to do with societal pressure and putting you in boxes by sex and age.
Take this experiment... go somewhere no one knows your age and hang out with much younger people for like a week. See how your health is afterwards.
https://www.psychologicalscience.org/news/releases/age-is-ju...
https://www.businessinsider.com/ellen-langers-reversing-agin...