I use to think that driving around a beater would be the way to go... But, hopefully your beater isn't a tacoma toyota or honda civic.
Even the older ones are worth more of a value it seems...
The way a thief mind works...
A) how fast can I steal this car...
B) how reliable is that car...
In my mind would be...
A) An older car would 'usually' be much easier to steal than a newer one that had a dead kill remote start switch that was only activated with a key fob.
B) If they drove that POS, here to X Store, and it's still going after 17 years, it must be maintained pretty well.
I do drive a junker tho. Not by choice... Because it still runs and gets me 42-44MPG.
I love saving $! I often thought of installing a magnetic kill switch that would activate 5 minutes later after you turned the car off... Shrug....
https://www.youtube.com/watch?v=DOTDt0eKZYM
This guy explains how it's done with less than 10 bucks in parts. One could add in a capacitor to keep the relay from activating so, if the engine dies you could restart it without having to keep finding the relay button.