I get it. You're not wrong. The problem is that there are violent people out there who will take advantage of and victimize entire cities, countries or civilizations if they can. If not another state, then a straight up mercenary army of the rich.

The fact that the entire world is suddenly feeling the need to arm themselves is of course super disturbing, counter-productive and is coming at the worst time ever given that all of this effort needs to go into climate disaster mitigations. And yet, if one party feels they can just pick up territory with their superior capacity for violence, the rest of us are kind of forced to try to deter that.