Think – how often do you hear of someone dropping a laptop computer into a toilet or leaving it in a restaurant? How often do you see spider-web cracks on a laptop screen from a fall? Small, hand-sized computing devices are much-more likely be involved in accidents than larger ones, because we carry them around with us all the time, in pockets, purses, glove compartments, etc.
Reading this list (via John Hardy on G+), I think the same kind of distinction applies to long firearms vs handguns – handguns seem to have a lot more stupid/accidental discharges than long firearms like shotguns and rifles, because they’re the smartphones of the gun world. The problem is that the consequences can be much more serious than having to leave a smartphone in a bowl of rice overnight to dry out.