Why won't I sing roles?

Unlike Sir Paul, I'm a fully trained composer with a postgraduate degree. Writing opera is premised on the idea that my melodies are communicable. If I demonstrate the songs, it intimidates people. They can't imitate my voice, but my Perfumed Garden tunes are all written down. I don't sound like a Middle Eastern person, plus I find acting tedious. People want to possess my voice, but that's immaterial when the tunes are composed. Anyone could sing those songs, particularly the ones with narrow ranges. - I hate most modern pop-based musicals, and I'm not a big theatre person. Opera's a different realm. I see The Perfumed Garden as a Peter Brook extravaganza.