Let me get this straight:
you have gone to an ATM, presumably with the intent to withdraw cash. You have inserted your card, entered your PIN and then selected cash withdrawal and the amount required. You have removed your card............. and then just walked away without your money !
What the Hell did you think you were there for in the first place ?
It is like going to a supermarket, paying for your shopping, then walking out, leaving your trolley full of shopping behind.
The word stupid does not begin to do justice......................