I own many firearms, have had a lot of training from competitive shooting, to self defense response scenarios including knife and disarming. A little triage and legal too. Am I a expert, by no means.
I'm all for self defense for yourself, family and your home, armed or physical.
Your question at least to me is just a little overboard, it's just not necessary to
to live your daily life at that level of readiness.
In case you never heard of it... I follow the Jeff Cooper Color Code Chart for level of awareness. I will carry, but only in a Orange+ level of awareness.
Awareness level of yellow (alert and aware, but also calm and relaxed) is where you will be most of the time. In this state it is really not necessary to
be prepared for deadly battle.
Look into the awareness codes, maybe it can provide some sense and calm to your imagined and sensationalized fears of daily living.