Originally Posted by LunaZ

Get an alarm with tilt sensor and proximity to make noise and act as a deterrent to thieves.
Think of this a supplement to your auto insurance and relax.

This isn't the Wild West. You can't use lethal force to protect your property... only life. If you were to shoot someone for stealing, or attempting to steal your property, you would find yourself in a huge mess of trouble and the inconvenience and legal fees would far outweigh whatever your insurance deductible is.