I grew up with firearms in the house. All loaded. A 12 gauge shotgun by the backdoor all the time. "If it isn't loaded, it might as well be a baseball bat", is what my Dad used to say. And you know what, they were never an issue. I was taught about guns and their safety. both the gun handling safety, and the safety they provide in a home. I was taught to respect a firearm from a young age. They are not toys, they are not things you fool with, they have a purpose.
The only time I did not have a loaded gun in the "house" with me, is when I lived in the dorms at college. probably the place you need one the most! but my girlfriend/fiancee (now wife), kept one at her apartment off campus. I was there alot!
Carrying daily was a natural progression of having that "comfort" others have mentioned of having one in the house.
It is both a tremendous responsibility but is very comforting to have a loaded firearm handy at all times.