I recently used my phone to wirelessly charge someone else's phone that was about to die. Pretty useful feature in the moment. I only used that feature only that one time in the 2 years I've had the phone but it's nice to know that is an option.
I did this when out with a friend the other night. It was a neat party trick so they could stay in touch with their sister. First time I've used it in years of having the phone.