"Might makes right," you know?
I personally control my life by spending almost all of my income, after bills, towards expanding the elaborate tower-defense-like automated weaponry on my plot of land. If I must leave my fort, I always drive my T-34 into town (I'm saving up for a Sherman).
If anyone is interested in their own tank, this is a fun little listicle of what is possible: https://militarymachine.com/military-tanks-for-sale