Unless you were a musical idiot savant, i.e. simply incapable of any other skill whatsoever, wouldn't you want to go into absolutely any other field than music composition? Except for the always-important boredom factor, why not be a used-car salesman or, perhaps, work in the expanding fast-food service industry. It pays much better!!
Being a composer is sort of like being a Franciscan or Dominican monk, without the dental plan.
But at least celibacy is not a requirement...
Suitable music? Hmmmm. Here is Kovács Szilárd playing his organ transcription of the music of the Angel-Musicians from Olivier Messiaen's opera St. Francis of Assisi: