You and me both. On the other hand, I'm so much stronger than I used to be--a much better climber, with much better stamina. Hills are part of the issue: nothing is truly flat here, so it's always slow one direction and pretty fast the other, which averages out to 12-13 mph for me. And realistically, I ride alone, I'm 45, and I'm not interested in speed training. The pace isn't going to magically pick up on its own.