Re: The Big Question:
"I couldn't think of a single occasion where my life had been negatively impacted by not being home when someone rang my door bell."
Just because it doesn't impact you it doesn't mean it doesn't impact anyone.
As I said, elsewhere I can get half a dozen (not unusual - 9 is the record) health care types visit in one day for an elderly relative. If I'm not there for these people and my relative cannot get to the door then the Ring is a godsend. It even saves the callers time as I have stopped several accidental sendings of multiple people to do the same job (I once had three different people turn up in one day to take blood for the same test).
Even when I am working from home I still answer using the ring as my office is upstairs and it's far quicker.