I'm a little puzzled by your last comment, Ruby. Many - surely most - dominants are sadists, right? They get off on inflicting pain and/or other suffering. Masochists get off on taking it. Slaves get off on fulfilling their owner's needs.

I therefore cannot see any way in which a dominant inflicting pain 'for the hell of it' should be described as 'dangerous', as long as they are doing it to a consenting partner.