I conduct my life in such a manner that I'm unlikely to get into "ambiguous" self-defense situations.
If I'm in a self-defense situation, it's going to be glaringly obvious who the aggressor was. I don't engage with most "normal" people, who hold pretty much zero interest for me. I certainly don't associate with the criminal element or voluntarily go where they congregate. If you want to pick a fight with the guy quietly reading a $150 book on machine guns and put him in immediate and reasonable fear of life and limb, well life is full of choices, some of them sub-optimal and irreversible. Here in Ohio, my choice of self-defense tool is unlikely to have much bearing, be it a broomhandle Mauser or an AR in .458 SOCOM.
Ask the late Arthur Buford, who was the first high profile bolo in the victim selection exams immediately after the passage of shall-issue concealed carry in Ohio. The general consensus with miniscule exceptions on the FAR left was, "Don't want to get shot? Don't try to rob people."
Traveling to other states to protect the property of total strangers really isn't on my to-do list. Kick in my door tonight and you're going to meet deadly force in whatever form is most immediately to hand, be it a 12ga. Foster slug center of mass or a cold chisel to the skull. Either way, you're going to find scant sympathy for your self-inflicted plight from the public at large OR the legal system.
I agree, people that go looking for trouble are successful at finding it. I don't go out looking for trouble.