I love alum (more difficult), but there a lot of other places around to go. I can see where you think it could get boring fast, but it really doesn't. I find road biking more boring because you can locate objects easier than in the woods. For example on the road you can see what lies a mile or so ahead and I tend to focus on that, "am i there yet, am i there yet, am i there yet," plus most of the road riding I do I know the route because I drive them all the time. I try to get to a trail at least once a week and never get tired of riding the same trail. The trails at alum are around 6mi and I average 40-45 min lap pace. There are so many different variables to work on , line choices, gear choices, all kinds of different setups. I compare it more to motocross than road biking. You're in the woods, ripping past trees and splashing thru creeks, jumping roots hitting obstacles. For me it doesn't get any better. Demo a bike and I promise you, you'll love it. Completely different work out.