Protecting your property is fine. My point wasn't to let people 'touch your shit', it was that setting up your alarm to create a situation in which you will be confronting a would-be thief is a bad idea, legally and for safety reasons. Notice where I discussed prevention.
BTW, while you are counting to 30, or tuning the lights on, or whatever, I hope you dont get your head blown off. My recommendation is if you put a gun in your hands, be prepared to use it as soon as necessary. Trying to scare people off by seeing your gun is a good way to get yourself shot. Im not saying this to be crass, I honestly hope you are never put in that situation. Ive had a gun pointed at me before, its an experience you never want to encounter, trust me.