I share your thoughts about alarms, car or house they just get ignored,,,but Im hoping that the burgler might be a bit jumpy and the noise might be enough to frighten them away. As to big vicious dogs, I certainly wouldn't want to be responsible for one,,,say the pipper got out and mauled someone,,,what about a small dog, bright and alert and makes a lot of noise,,,wouldn't that be just as good and less dangerous?
Locks are a starnge one, when renewing our house insurance they ask if all windows have locks and doors 5 lever mortice locks,,which they dont,,last year I asked the guy what difference would it make, might be worth fitting them,,and to both his and my surprise it made no difference to the price at all!
Maybe would be different if we lived in a high crime area?
Steve.