I have said before and I'll say it again.
Burglars like houses without burglar alarms.
The house opposite mine was burgled this afternoon. As cool as you like they knocked on the door to check no-one was in before going around the back and breaking in. My CCTV only has partial coverage of the house and it is some distance away -CID have taken a copy of the CCTV as there is a chance that the hat the burglar was wearing might be recognised if the pictures are circulated tonight.
There is no way they would have done that if the house was alarmed.