I have an ADT home system, 3 doors to my house are all rigged and one motion sensor that watches the front door landing and kitchen windows.
I am single and live alone so I like having something watching my back when I am away, especially since I am downtown all day for work.
Have had no issues with the system and I can control it from my phone.... it had the option to just turn the door alarms on and leave the motion sensor off if you have pets or want it on while you are home cause you have a crazy ex or some shit. They offer lots of extra upgrades if you want more shit though, cameras, more motion sensors, window sensors like the doors, you can get pretty crazy.
I think an ADT system is perfect for a guy like me, I don't imagine I will have many false alarms, only other person with a key to my house is my Dad and he knows the security system, I can see where it could become a pain in the ass for the Cops with people who have it but have kids or relatives or pets coming in and out and shit.
Yeah I know, I just gave away my secrets so CCS spies will come break in now right? Nah man my bitchy old neighbor also watches my house like a Hawk lol