I don’t think I have ever considered composition as a profession. There are very few composers in this country that pay their bills by composing alone, so we resort to other methods to make ends meet. Some composers are also performers (which is pretty handy in getting your works performed), some conduct (ditto), some teach, and others work in completely unrelated fields.
The most compensation I have received for a work was a $24 bottle of tequila. It was payment for my Figment for Alto Saxophone Alone.
Since it is not my profession does this brand me as a hobbyist as Randy Nordschow suggests? (He tries to avoid the dreaded c-word.)
I guess it does make me a hobbyist.
Composition is my pastime, my leisure pursuit even though it does not often come with ease.