The biggest thing is not to try to set it and forget it. You have to be watchful.
Randy mentioned a door getting kicked in. Here's one more piece of advice for whoever wants to hear it. You can spend $300 on a deadbolt and someone kicks the door in and breaks the frame. Your best money spent on a door is in the frame many deadbolts come with 3/4" screws for the strike plate. I can't tell you how many door kick ins I've seen where the door and deadbolt is fine but the frame is all over the room. These days most good brands come with at least 2" screws for it which is Okay but they are size 8. The screws should go into the jack stud at bare minimum. Ideally there should be at least 4 screws into the jack stud and minimum of size 10. You can beef up the door also and should if it is a pre-hung door. There are all kinds of systems for that many of which are stupid and unnecessary and more that anything ugly as a fat lady's ass. It's a balance. You don't want to get broken into hut you also don't want to spend a grand on a fancy door then make it look like crap. The wrap around plates work really well but I don't think they look very good. If you are going to get one of those though, get a Don Jo (or MAG if you can find NOS {MAG is now out of business}) which has a recess for the bolt or latch crimped into the plate, not one that goes over the bolt. In general though if you have a good solid wood door the door won't split as easily as the frame. If you get a strike plate with at least four screw holes And make sure they go into the stud then you're in pretty good condition. Especially if you're in an older home where they actually true framed the door frame and you have a four or six screw strike plate then the guy that tried the kick in the door will be easy to find. Just look for the guy with the limp. There is much more to it. The biggest thing is that you want to have a multi-layered security system. anybody can figure out how to kick a door in or beat a camera or get around an alarm. Not as many can beat all of them. The more layers you have the better off you are. Just one other thing to keep in mind. You want it to be something that is easy to use because if it's a pain in the ass you'll quit using it. You may use it at first but eventually you'll get complacent and quit using it because it's a pain in the ass