Sorry the number of soldiers killed in one night by an angel is 185,000 not 186,000 what's 1000 soldiers between friends.
You can read all about it in Isaiah 37:36
Just because you haven't encountered a Demon or Angel doesn't mean that they don't exist. Many of us have had physical contact with them. But don't worry, you will eventually have to deal with them whether you like it or not.
Again, a nice hypothesis. Do you actually have any evidence of Demons or Angels? You claim that many have had physical contact with them. Any proof of this claim?