One of the features of art is that it presents how the art maker was thinking. From that, the distinguished personality is painted and differentiates yourself from the others.

So before getting confused between "Art for art/ art for humans", I suppose concentrating on creating exactly how we hold in mind should be the first step. Once you are able to create your own, you'll be able to create what the others would love to see.

Otherwise, your art might not be sold, but it might be felt by those who resemble themselves to your art pieces. Being bothered by the problem that "I must complete this one for sale" would also trouble our painting.

Might you keep on with this secret hobby! ❤️‍🔥