I prefer flat. But not the monotony of a straight road that never ends where the corn is taller than me IN has some hills in the south however. To combat the monotony if a straight line ride, I hit the local neighborhoods, pedaling through them, stringing them together in a circle around my starting point. I can get in a 25 mile ride easy that way, and never be that far from home. Lots of turns, some inclines, people, houses, dogs, etc.

Every obstacle has a solution