Fire drills at work

So my office has been having fire drills at least once a month, probably more but I’ll give them once a month. Now, we are all adults, do they not think we will be able to find the exit in case of an emergency? To me, fire drills are good for kids in school but to have them so frequently is in my mind is a little ridiculous. The fire drill completely halts any productivity your office was having, because now when the people come back from the fire drill they're going to be talking about how dumb it was for a while and that it was such a waste of time. Do you time monthly fire drills are overkill?