Children like to swim in pools. Children like to ride bicycles. I sure hope even the most enthusiastic gun owner doesn't give guns to children to play with.
I don't have to justify the usefulness of pools or bicycles. The kids like them, it's a fact.
As a society we tolerate the risk of those things. Is it rational? Should we? I don't care - we just do and that's a fact.
You can take away a risk associated with a pool or bicycle but only by taking away the fun that children have swimming in pools or riding a bicycle.
It's true that some parents enjoy the things you can do with a gun. It's also true that having a gun in the house is additional, sometimes tragic, risk with no benefit to children.
First, as a parent you're supposed to put the benefit of your child over the little joys in your life, like squeezing a trigger of a 44 Magnum or getting enough sleep.
Second, you can enjoy most of the benefits of having a gun without actually having one in the house.
I'm pretty sure you cannot hunt or discharge firearms within city limits anyway.
You can still indulge yourself in hunting or go to a shooting range without endangering the life of your child by having a gun in your house.