What good are security cameras if no one is monitoring them?

Homes have them, banks have them, stores, and construction sites; security camera about the property. If there is no real-time monitoring of the camera how effective or useful is it? Even if you see the young man in the Gray hoodie come on to your property and steals your expensive lawn décor, if you can’t see his face what good is it? Even if you do see his face, you don’t know who he is, so how would that help you? The best most security cameras seem to do, IMO, is let you know you been ripped off, but does little to help you catch who ripped you off. Once the person has your goods and are gone, they are difficult to catch. Many times the quality of the video doesn’t even give you enough detail of the face, you may even have difficulty telling if it is a light-skinned African American man or a Hispanic male if he has a hoodie or a beanie on.