@Florence-And-Michael0, it can be a frightening world out there.
It is Human Nature to decide how likely something is by thinking about how often you see it.
This causes people who follow the news a lot to vastly over-estimate how likely it is for things to happen that are often in the news.
(Fun fact: This is why the Lottery Commision makes a big deal of showcasing winners. It makes you think winning the lottery is WAY more likely than it really is. Note they don't show you the millions of non-winners.)
If there were a newspaper that recounted the story of every AirBnB host that had a guest stay *without* getting murdered or molested, it would be huge. Gigantic. Millions upon millions of pages of hosts and guests getting along just fine. It would be very boring reading, but it would help your brain understand better the actual odds of something horrible happening.
You are the only one who can decide if hosting is for you.
But please remember that your odds are probably far, far greater of getting injured in an auto accident than getting hurt while hosting. In 2016, in the USA alone there were 37,461 people killed in auto accidents. Those were just the fatalities. How many more were injured? That is over 100 people killed every single day.
Do you continue to ride in or drive a car?
Live the life you want to live. It might include AirBnB hosting, it might not.
Be cautious. Don't take unnecessary risks.
But please, do keep things in perspective.