That's not smug at all. That's not what I'm saying either.
It's just that.. you can't master something you don't practice and understand. It's true in every single thing in life you do, sports, literature, maths, music, cuisine, kindness, etc.
If you don't like to compose music, why suffer this and even submit to the randomness of some computer program, rather than giving the opportunity to another fellow human to open your ears and your mind to what they appreciate doing?
You can generate your music if you like. It just cannot compare to something a human really did on her own, and invested of her desire, time, practice, research, even a beginner.
It's not a matter of being professional or not. The best musicians I know are not professionals, they all have a day job.
For every famous star for one given instrument, you have 10s of undiscovered/local better musicians that just are carpenters, cooks, painters, drivers, factory workers.