Woaaaa. I didn't expect this much of a reaction. I must chime in to fully clarify a few things.
As Duck69 stated perfectly, Security of ANY KIND is a deterrant. If someone wants to break in, defeating a camera 99% of the time is NOT going to trip an alarm. (Sorry, too many friends on the Wrong side of the tracks, if you know what I mean.)
I have always condisered the determination of Price / Security AS risk assessment. That's the whole idea. If you feel safe enough. All of this type of decision ends up being emotional, as my wife would prove. (The idea of remote, Battery powered Cell phone back-up for when phone lines are cut doesn't help her assesment of the system, but it makes a difference to me.)
Removed Personal Opinion - NOT Relevant
Wow, I guess I ranted more than I thought, But seeing that everyone was really saying the same as I was trying to, but in a much more understandable way, I must capitulate to the crowd. For the average kid, vandal, etc. a video camera would probably be MORE of a deterrant than an alarm. Your absolutely right in this. I was thinking much more in the "Professional" burglar attempting to get in while no-one is home. Here, a camera is pretty much useless. To any normal guy, however, a camera might be monitored, might be recording, etc. which would have a HUGE deterrant effect. This is a point of view that I often overlook in the setups that I do. Of course, the only break-ins that have actually been SEEN by me were by professionals, so that is why I have a case of "Tunnel Vision" there. (Strangely enough, I am thinking of adding cameras to my own system. Hypocritical, isn't it.)
Lastly, the one thing that truly seperates the "X-10" type systems and the "Wired" systems is the "Human" in the system. X-10 can call the police. It can even give a specific message. (Even though this is illegal in my state.) the Monitored system is going to have a person doing this. Bad phone line, the person can handle it, call state police, etc. Fire, handle it differently. For My wife, it was simply the KNOWLEDGE that a person was there that made it worth it. I would prefer the X-10 and wired without the monitoring and trip noises, make calls, etc. without the "Human". But to keep the emotion level to the minimum, non-technical people usually prefer working with a person or knowing a person is doing it. (I'd love any male to explain females in a way that makes perfect sense. Of course I'd love to have someone scribble the grand unification theroy for me too. I think the second is more likely than the first.) This being said, What is the monitoring worth? I, too, think the price of monitoring is way over the top, but I AM getting the service of a human being, 24 hours a day, 7 days a week. That ain't cheap by any means, but I agree that the current pricing is WAY too high. Unfortunately, if I want to "Directly" contact the Fire Dept or the Police, I need a human to do it. Automated connections of this type aren't allowed here. (Could easily call friend, neighbor, etc. and have them call, but there is the two-step process that could break down and then a machine makes the decision what to do next.... I'm sure you see where this goes.)