Good strategy! I currently own 5 cars; 91, 93, 97, 09, and 11 (and the last two are a utility van and a base model hatchback with no electronics).
I had a job in college working on information security for automotive systems. I'm actually pretty good at fixing cars with electronics, but the DRM where you have to go back to the manufacturer is too far for me. If I can't fix it with what's in my garage, I'm not interested.
It's also more eco-friendly than constantly scrapping/upgrading cars.