I often, but don't always, carry a gun in my home. Initially, it was to practice. I don't live in a state where it is easy to get a CCW permit, I do have a UT non-resident permit and carry often when somewhere I can. I won't get used to carrying just carrying part or all of 1-3 days a month, so I carried at home. I also, like many (most?) here have a bed stand gun. I continue to carry around the home on the same idea, but if someone were to break in while I'm awake, it is much quicker than a bedside gun (especially if I'm across the house or on a different floor from my bed stand).
If MD ever goes shall-issue, or I finally make my move to PA or VA (I've wanted to for about a decade, but life/things keep getting in the way), I probably will nearly always carry at home. Once I'm dressed for the day, I'm dressed for the day. My keys, wallet, pocket knife (when I'm not at work, I don't carry it when working because a knife in a school could get me sent to jail if someone found out), pocket flashlight, pocket sized blood sugar monitor, etc. are always in my pockets, in or out of the house. I see no reason why my gun in my IWB holster would be any different. When bumming around before my shower, or when working out would be the only times I wouldn't necessarily have a gun on me (and it may still be on me when bumming around pre-shower depending upon what I put on when getting dressed).