• Areas of entry where there might be a better view for capturing the face or features of an intruder, specifically with better lighting conditions.
• Watching pets that are home alone
• Keeping an eye on someone, like small kids or an adult with a debilitating issue
• Insurance discounts

I have indoor cameras. I'm not really worried about the first one, the second is no longer a concern unfortunately as my dog passed away from cancer in January. I mostly have them for the last item at this point.

That said, ive used them to help keep an eye on my Dad, who had ALS. He knew he could signal to the camera for help (usually the remote fell, but a couple of times it was for medical equipment). All internal though, not internet connected.

When my kids were still in cribs, I set up cameras in their rooms as well. Hearing phantom cries is a real thing, and I had no interest in the crappy-yet-expensive baby monitors.

So yeah, they have their uses.