One bad guest who upsets the other residents and leaves the property in bad condition will sap your earnings and throw off your life. Airbnb might eventually reimburse you for damage, but there’s still your time and aggravation.
Also any household maintenance issue, like an internet outage or finicky toilet or a microwave on the fritz becomes an emergency if it’s an amenity you promised to a guest. Even realizing the guest towels are getting a little worn might be a cause for panic. Motel 6 has a handyman on call, maybe the owner or a relative, and can take a room out of rotation if they’re not booked solid, but Joe Airbnb is stuck begging a plumber to come out on short notice or rushing to Target before check in time.