Except that she IS my wife, and she IS a mother. While it's fun to do the "husband of a dirtygirl" thing every now and again OT, it's not a personae that feels authentic for me to take on in any sort of an ongoing way.
YOU seem to be missing the fact that I have been the far, FAR kinkier, higher-drive, higher-touch partner in this marriage of 24 years. I have BEEN the one to introduce fantasy, role-playing, MB, soft porn, dirty talk, etc., into our marriage and our lovemaking over the years. NONE of these were ever initiated by her, nor were they ever effectively even CARRIED ON by her after I (I thought) pretty "safely" introduced them to the bed, and we had a bunch of fun with them. I never ridiculed her or teased or did any "OMG, what did we DO last night???? thing with her.