Hello @Joan2709 @Traci293
I am one of those hosts who offer a non refundable rate and it is a popular option with guests. So far I haven't been put in the situations that Joan mentions but know that this day will surely come!
I always double check with my guests that this is the rate that they have asked for in their trip request but that there is a more moderate cancellation policy available if they are not sure of their holiday plans.
Having a non refundable rate means that Airbnb will show guests this lower rate in the search results making us more attractive than other places to stay.
So it's important to weigh up all the odds before you decide Traci,
All the best
Joëlle