I feel a little bad for not making an opportunity to resolve this like an adult but I feel like my decision to withdraw from my D&D group by bowing out gracefully is fine; Cowardly, but fine. Are there any DMs or GMs out there who like murder hobos? If not, let me be the first to say as a DM I don't care to entertain your murder fantasies on a bi-weekly basis. They're boring and frustrating. If you want to play D&D and you want to do something morally questionable, think classic Robin Hood. Got it? Cool.