For most folks who ID as "creatives" we start doing the thing because we love it.

Whether that's illustration or comics or knitting or sculpture or short stories or screenplays or or or....
All these things start from a place of "OMG! I love this so much that I want to do it too!" So we write or draw or knit or whatever because it makes us happy. (Even when it makes us sad, too.)

But, at some point we realize that we can either do this thing we love a little bit less or we can try and make money...