I do this.

What I really like about my microwave is that the beep will immediately cut off off I open the door. Like if I catch it at millisecond 10, I only have to hear the first 10 milliseconds of beep. It's a relatively short single beep too. I can't tell you how much it aggravates me when a device has like a long 3 beep sequence and not cancelling in time will subject you to the whole damn sequence.