I live in a relatively safe neighbourhood, but we had a break in before christmas and have since installed Simplisafe indoor cameras in addition to the various other sensors. We have one in the living room that looks across to the dining room and another looking outwards on the kitchen window.
I have mixed feelings about this. Personally I find it invasive and my girlfriend has activated the cameras remotely to show her family without warning me. So I've banned that.
But on the other hand she was the one who came home to the burglar (and shouted at him causing him to flee and leave my consoles behind, which he had neatly stacked on the table. So we lost nothing), and she is still a little shook up over the whole thing. She feels the cameras are needed, so I've agreed to them for now.
I'd probably be okay with putting them in in place in the mornings before work and then putting them away in the evenings, but that's a lot of hassle.