The drop bars aren't the problem, the position of them is. Drop bars are a LOT more comfortable than flat bars on long rides. That's why all road bikes have them. They might feel weird at first but once you "graduate" from flat bars you'll never look back. It takes a little bit to get the control too. Cyclocross bikes use drop bars riding through mud and obstacles.

If you're not comfortable with the drop bars they are either too low, or too far away, or both. Raise them up and get them closer. It takes a little bit to get the position perfect.