Since most of our guns are pretty much a luxury for most of us (save one or two that might save US), for me the only "dark side" is if you don't secure them properly and somebody shoots themselves or someone else with one of them. Easy to prevent, but I've been in many households where it wasn't.
Basic economic principles and a little good sense should keep control of the economic "dangers" and old colonel's summary pretty well says it. Only exception is when an economic disaster unrelated to guns occurs (our periodic "recessions" for example) and carefully purchased guns have to be made "liquid" too fast. That can hurt. 1982-4 was such an experience for me--OWWW! Only upside was I later got to replace all the guns I'd sold off and try to avoid any mistakes I'd made the first time....
