I reply gently to vicious personal attacks out of

I reply gently to vicious personal attacks out of the blue which you as mod are empowered to delete, but for some reason don't do so. Instead, you delete my posts featuring DD. I don't mind the unprompted attacks. Indeed, I find them quite humorous as they reveal no materially relevant debating skills and reflect poorly on the attacker. However, as mod dutibound to enforce TOU, I would think you would rather those ad hominem attacks be better posited as PMs so as not to clutter and distract the board from our topic because, once accepted as S.O.P., uncouth behavior risks cascading this board into the gutter.