i don't think they are really useful either, just a plus for merchant nothing else
Amph, I think you underestimate how many people will buy the coins from the atm that, without which, wouldnt purchase bitcoin/know how to purchase it at all.
Honestly,I don't know why someone would use a bitcoin Atm I'm not sure if I mentioned that in my post but if you do a little research you would find it is easier to buy over the web. I started buying bitcoin on coinbase day 1 from home.