The whole "home security" thing is wildly overblown. All dogs bark. Therefore all dogs will give you warning, or ward off a potential intruder. The odds of someone trying to break in are low anyway.
Secondly, **** they are a lot of work dude. I think i made a post somewhere in here already about it, but it's nice to have dogs that don't go apeshit everytime someone wants to come over. Or everytime someone walks by your house. It's annoying AF having to tell your dog to

, and they don't listen any goddamn way so now you're just yelling at the dog like an asshole while your dog is still going apeshit.
These aggressive, high energy dogs simply aint worth the trouble. I had a pure blood blue nose pitbull once and good god she was a ****.
I had a Rot/Pit mutt and i loved him, but damn what a chore he was.
Most people get a dog thinking they're going to be a companion, an accessory to their lives.
But dogs like these aren't an accessory, they're your WHOLE life. You cant just leave him in your backyard and think it's gonna be gravy. You MUST walk him, all the time. Things like off-leash dog parks....eh, you better be careful. You have to spend a tremendous amount of time training them, and you have to be able to communicate with them on their terms. So unless you plan on having your life revolve around your dog, just get a regular old boring, wimpy dog.
I got two non threatening, pip-squeak dogs and couldn't be happier. Life is so much easier with the TWO of them than it was with my ONE Rot/Pit mutt.