Are you referring to me personally or is this a general question?
They are absolutely necessary for the continued survival of the human species, and if they were not around people would just go back to swords, or even rocks. The numbers/percentages of murders and deaths would not change. You are laying blame for the actions of a person on an inanimate object, a tool that is used. If I set my gun down on the counter and leave it there it will sit until the materials that it's made out of deteriorate and break down. It's not until someone interacts negatively with a gun that it becomes dangerous.
There are no dangerous weapons, only dangerous people.
At that point it is no longer a right, it is a privilege which has to be granted. Whether you like it or not the country you live in has in its constitution words that ensure people the right to own, operate and carry firearms. I do not want to attempt cliche, but if you don't like it go somewhere else.