I can't believe we still have to pay for incoming calls in the U.S.
You have to pay for incoming calls but it's cheap for the caller. In Europe, you never had to pay for incoming calls but the caller has to pay outrageous rates to call your mobile. In either case, someone has to pay. No one system is better than the other.
They are called computers simply because computation is the only significant job that has so far been given to them.