How is this an ATM?
ATM is an automatic teller. Tellers at banks take deposits and withdrawals. Because of the way Bitcoin turns the world of banking on its head, the most useful thing an ATM can do is take cash and give you Bitcoins. Because with Bitcoin you are your bank, and most people out there have yet to get their hands on Bitcoin. Converting cash into Bitcoin is the most useful feature right now. Converting Bitcoin into cash is useful, but will come later as we roll out. For now think of it this way: Bitcoin is like email and cash is like letters. How often do you want to print your email? Not as often as you want to send one.