My .02:
Children + Unlocked Firearms = Bad Combination
And even if you trust your children, they may have other less trustworthy kids over from time to time. And even the most responsible children are still vulnerable to doing child-like things (such as "playing" with firearms).
I'd recommend some type of system to lock the pistol up, perhaps one of those safes that opens with the press of a combination. If nothing else, it will buy you peace of mind when you're not home but your kids are, along with your pistol.
Children + Unlocked Firearms = Bad Combination
And even if you trust your children, they may have other less trustworthy kids over from time to time. And even the most responsible children are still vulnerable to doing child-like things (such as "playing" with firearms).
I'd recommend some type of system to lock the pistol up, perhaps one of those safes that opens with the press of a combination. If nothing else, it will buy you peace of mind when you're not home but your kids are, along with your pistol.