I'm starting a story about a professional bondage top. His advertisement says: "I will do anything you want to you -- except snuff."

After a client tricks him into strangling her to death, he realizes that he really enjoyed snuffing her, and changes his ad: "I will do anything you want to you -- snuff included, 50% extra."

At the end of the story I plan to have him snuff himself and a volunteer. But why? Is it just a form of "final exit" from a painful incurable disease? Or a public demonstration for various reasons (e.g. protest or raising public awareness)

Some ideas I have come up with:
1. Get rid of the self-snuff ending - have him snuff one more volunteer, then retire/leave the country
2. He has incurable cancer and wants to get one last pleasure before he kills himself
3. He wants to do it in public to raise awareness of sexual snuff
4. The police are going to raid his demonstration. The venue can resist them long enough for a hanging, so he goes out in style
5. The final snuff scene is part of his protest against the new anti-snuff law

Thoughts? Ideas? Preferences?