Too many don't and they will ruin the fun for the rest of us. Most people who oppose firearms don't have one. It's easy to give up a right or a privilege you don't personally use. They also don't understand the risk and usually overestimate it. So we need to explain it to them on the one hand, and exemplify responsible behavior on the other.
Background checks prevent criminals from getting guns and they require seconds of our time.
Don't load your gun until you're ready to shoot. Don't touch the trigger until you're ready to shoot. That's because they have been taught to respect firearms. We should all be so well trained. My guns are also locked up so that she can't get at them even if she wanted to.