Not all people are responsible with their guns. For instance, this event. Another would be the case where kids with bb guns broke in and shot other kids with them.
I cannot say that I am completely responsible either. For instance I brought my gun over to a friends house once (who also plays airsoft) and I had put it in a simple shoulder-sling bag. Looking back on that, I realize that it was extremely stupid since the barrel had to be pushed back into the bag every once in a while.
Now when I bring my gun to his house, I keep it in a gun bag and I don't go anywhere, just straight to his house.
Ares M110 LEAF - Ares Striker Tan
TM G17 Pink - KJW P226 TwoTone