That is good enough justification, whether thinking or doing. We know that our coffee keeps us going mentally during the day. One scientific study (written up in Runner World in plain language) reported about a 2% improvement physically for fit cyclists. The peak performance was 2 to 2.5 hours after having the coffee.
This times perfectly with my desire to finish a cappuccino just before heading out on the water for windsurfing racing. Now I need to work on having a fresh cappuccino waiting for me on shore to drink before going back out in the afternoon.