^ +1 [SMS], quite.
I don't believe it is an issue of legal gun ownership, as enact any law you like (
even one annulling a Constitutional Right), and the criminals will still have them. Look at the UK for example, historically it had a very low gun crime rate despite relatively very liberal gun ownership laws. Perhaps (?) after WW2 this began to change, perhaps as as result of many weapons being brought home as 'war trophies'.
So I recall my father having a couple of shotguns (for shooting 'game' i.e. things you intend to eat), and they were not secured in any way. He also had a .22 rifle (an Eley bolt-action, of 1930's) that had been given to him by his parents when he was a boy. The ammunition for neither was secured, which was in his gun-bag, hanging in the coat-room, plus other boxes of it on the shelf above. This can't be considered in any way reckless, it was normal country life, that also included being taught from a very young age to respect 'guns'.
At some point (1970-75?) the rifle and it's ammunition was moved to somewhere out of view. That likely coincided with the introduction of the 'Firearms Certificate'. This was effectively the beginning of state control of any firearms 'above' simple shotguns. I.e. rifles, any guns with any automation (auto, semi-auto, pump action... I expect the concept of 'belt-fed' hadn't arrived that point

)
The shotgun stayed where it was, and continued to be used. Later (80s) I recall him having to get a 'Shotgun Certificate' for it. AFAIR the only hurdle for that was the extent of any criminal record. I don't recall there being storage or gun-lock requirements. When my parents made a once in a lifetime move from one side of the country to the other to be nearer the grand-children (where they remain today), my father realised his need for the shotgun would be lost, since his days out shooting with his circle of farming friends would be lost. So he gave that gun to one of his friends (who as a farmer had both a rock-solid case for owning it, plus a use for it). AFAIR also at that time he resigned himself to having to discard of his rifle. He had brought it with him on the move (deep sentimental value) but once they'd settled in, I understand he decided there soon came a point he realised he had no use for it, and indeed it was a potential liability (esp. regarding grand-children brought up with nil country knowledge/lore of guns), even if kept with it's bolt removed and hidden in another place. So, he told me he took the rifle to the crusher at the local waste/recycling centre, where he could discard it anonymously, and IIRC he threw the bolt into a local rural river. And that was the end after 50+ years for him and 'gun'-ownership.
I'd like to see that kind of direct experience, which I'm sure was repeated in thousands of other households, graphed versus the rates of UK gun crime, over say a period of say 1900 - to date. The current rate of gun crime,
since and despite the above laws, is heading off the scale, it's many multiples of anything from earlier decades.
So no amount of gun-control has achieved anything, apart from removing a legitimate working tool and leisure pursuit away from the law-abiding. Perverse; the 'law of unintended consequences'. What has caused this spiralling crime rate? I don't know, since my access to a day out shooting is so restricted, I don't even consider it as a thing that is possible, so it's not of much interest to me. > But the end-result is whereas in earlier times I might have assumed I'd inherit my father's guns, these days I effectively might as well forget about even a simple a day out at a regulated/licensed gun-range and hiring a gun there. The current UK situation in this regard seems very similar to that in Singapore.
I reckon the key drivers
include international mobility of people, drugs, and guns. And maybe the imported glamorisation of 'gangstas' and it's associated gun culture.
I'm unconvinced that wealth disparity is a primary driver, since that was waaaaay higher in my father's youth, prior to the introduction of any benefits system, than it is today.
Just my 200 cents
p.s. I have relatives elsewhere in Europe. They have a 'war trophy' mounted on the wall of their stairs, a Thompson submachine gun [
http://en.wikipedia.org/wiki/Thompson_submachine_gun - aka 'Tommy gun']. Quite a statement piece

Another relative in the same city had my grand-fathers WW2 service handgun, which he showed to me as a child. Something like a Browning 9mm semi-auto. During these times, that country had and still has one of the lowest national gun-crimes rates in the world. How does an advocate of gun control explain away that apparent contradiction? ... Maybe because it is a more traditional, and less open and internationalised country, with all the parallel issues that that seems to have brought to the UK since the circa 1960s.