Of course it is!

"Every child is an artist. The problem is how 
to remain an artist once we grow up." - Pablo Picasso

So, there it is. There's the problem, as Picasso sees it, at least. 
And we agree with him.

Talk with most people over age 25 today and you'll see it's sadly true. 

Take, for example, that terribly accepted archetype of the "starving artist". Why is this okay? (Well, maybe they've been giving their art away for free.)
But moreso, we've simply been socialized away from expressing our creativity through paint. 

And not just paint, of course. 

You don't want me to cite for you all those articles about school systems everywhere cutting music, dance and other arts programs in the futile name of a balanced budget, right?