That what insurance and a security system is for.
Ah, but your confidence and security system will do nothing to impede what a thief percieves as an oportunity. Let me know how many times you replace your back window and go through filing with your insurance company before you stop advertising what you got hidden behind that tint with stickers.
Also, do you know how much your insurance will cover on electronics and entertainment systems loss? If it's a standard policy, it won't be more than a couple hundred bucks or so.
Just warning you (I really do hope that no harm comes to your car, be it at your hands or someone else's), with more age comes more experience and wisdom... unfortunatley.
Good looking ride though, I do like Chevy Blazers and Trailblazers (though personaly I'm not a fan of a lot of black on black... in particular the black rims... but it's all in the eye of the beholder).