You might also be on the tops during a climb so you can keep your chest up and open to breathe. I use the drops for descents and fast cornering and I also tend to be in the drops when "dancing on the pedals" and during takeoffs.
Life should NOT be a journey to the grave with the intention of arriving safely in an attractive and well preserved body, but rather to skid in sideways, champagne in one hand, strawberries in the other, body thoroughly used up, totally worn out and screaming: "Yeah Baby! What a Ride!"