Why wouldn’t someone?
I realize this might seem impossible to some,
but not everyone owns a cell phone.
It’s my understanding that you have to have one to use an authenticator.
When my friends with authenticators play at my place, they have to respond on their cell phones to be able to access their wow accts. IF I had an authenticator I could never join my friends when we play at one of their homes.
Personally, I like to play with a couple of rl friends. I certainly would find it a REAL inconvenience to not be able to do that.