Fair enough. What would you have us do? Let's take this analogy to its logical conclusion and see if it holds up.
This will take a while, but the situation is where do we draw the line between individual freedoms and possible/actual harm to others.
I would find it a dumb argument to say that we should have unlimited freedoms to do whatever we want as there are clearly 3rd party costs. The extremes are quite easy though and its a weak position to take to use those as the justification.
So, ultimately we have to decide where the line is drawn in terms of cost benefit. To do that we must establish a rough understanding of the costs and benefits of something like guns. Then we have to do our best to quantify (if even possible) value to those things. The argument must be a balance and not just a removal of all harm because we live in a free society.
The details are going to be the hard part. I think we all agree less harm is better, but not at the cost of everything. You would greatly increase the chances of you having a long life if you never took anther car ride, yet we all know that would not be worth it.
At this point, the argument is either you can never infringe on my benefit because I value that more and/or I disagree with the value of your cost, or, we need to take away the cost because we don't value the benefit like you do. That is a deeply flawed place to start.