Re: Being able to unlock your house from outside... already done
"A proper exterior door (both in domestic and bussiness settings) should NOT be easily kicked in with half a ton of force."
Can AND WILL. Trust me. I've seen the results first-hand. Pine (the average framing wood) just doesn't have that much sheer strength. That's precisely WHY most business doors are steel-framed and if necessary carry additional anti-jimmy measures.
"There is a reason most police forces have specially designed "universal door openers" (ie. battering rams) for the purpose."
It's so they don't break their legs, plus since they have handles on TWO sides, it also allows for two-manning if you need extra muscle. A burglar usually won't have that many resources plus will want a stealth angle at least for the initial approach.
"It makes a lot of racket and attracts attention of witnesses."
Unless it's the middle of the day, when everyone's at school or work. Most burglaries actually occur in broad daylight...because of this.
"Standard MO is thus to work quietly, at best using a crowbar, preferably drilling or breaking a lock to gain entry."
No, standard MO is to work quickly. If you can get in an out inside of 60 seconds, anyone who happens to be home at the time (again, they're likely at work or school) probably won't have enough time to make anything out, let alone notify the cops. No details means no way to track you means a clean getaway as long as you can conceal your loot (easy enough with something common but large like a van, SUV, or covered pickup).