Very sorry to hear this, Craig. People are a terrible thing. While there's little hope of recovery or restitution, I hope you get the help you need to get through this.
I just saw an episode of Grand Tour where they showed someone who left a python in their car as a burglar deterrent. Short of filling your car with tarantulas and snakes, there's a limit to how much more you could do to protect your car.
In the future, if you do decide to load your car with anti-theft reptiles, be sure to have a camera posted nearby for reaction shots.