If there are children in your house, the guns need to be under lock and key, and I include teenagers in the definition of children.   Even teenagers with some gun handling skills can't be trusted; the IQ of a group of boys is the IQ of the dumbest one divided by the number of boys in the group.   There are normally a couple of home defense weapons within easy reach in my house in case something goes bump in the night or someone shows up at the door uninvited, but if the grandkids are coming over, the guns go in the safe without fail.