Cameras deter crime. Not ALL crime. Criminals aren’t stupid and will simply go burgle someone that isn’t recording.
So now your front camera has somebody with an unidentifiable hoodie knocking and your back camera has somebody with an unidentifiable hoodie kick in the backdoor. How did the camera help exactly? Is the police really going to find somebody with this almost-invisible stain of dirt on the sleeve of the hoodie? Or are they rather going to say "oh well we'll keep an eye out" and that's the last you hear? My experience is the latter. Now you lost the worth of what they took plus all the money spent on your camera gear and the time setting it up.
Or are you saying doesn't matter, the deterrent is enough? Well then put up a fake camera for a fraction of the price. Works offline too.