Actually we do have a Bitcoin ATM near my location but not much people using it because of the convenient of BTC in cash is not much. They still prefer withdraw money from withdrawing cash from a Bitcoin ATM.
And the fee of withdraw is really costly.
For now,people won't really care about bitcoin atm since most of the people today are not yet knowledgeable about bitcoin.But few years from now,bitcoin will be more popular that will open the eyes of the people to explore btc.Bitcoin atm is already a good sign that will bring us much convenience when mass adoption for btc will take place.