It;s certainly true that people are accidentally killed or injured in accidental firings of both handguns and long guns every year, but that is more a fault of mishandling than ownership. No firearm, and I repeat, NO FIREARM should ever be touched, either by the most inexperienced amateur or the best trained expert, without being checked immediately to see if it is loaded. To the best of my knowledge, no one has ever been killed or even slightly injured by a gun unless someone either accidentally or intentionally squeezed the trigger. Firearms are inanimate objects, no more dangerous in and of themselves than a hammer or a table lamp. both of which can be just as dangerous in the hands of someone determined to do you harm. As for criminals, I don't know what the statistics are where you live, but here in the U S, there are more than 8 times as many people killed every year by drunk drivers than by firearms. Given those statistics, and using your logic, we would be walking everywhere we go.
As to the argument of "giving a robber a loaded weapon," I have never said and never will say that every person should walk around armed at all times, but it is a fact that predators feed on the weak. In a society where the odds are that the person being assaulted might very well be armed, the overall number of assaults invariably drops dramatically. There are many ways to greatly increase your chances of not becoming a victim of robbery or assault that do not involve the use of a firearm, but this is not the place to get into that. If you are interested, check with your local police department, and they will probably be able to direct you to a teacher if they don't offer the classes themselves.
If you are "against all guns," I have no problem with you avoiding them as diligently as is humanly possible and I sincerely hope you live a long and happy life doing so. That is your choice, and you should by all means have the right to make it for yourself. Just allow me the same free choice.