I feel Ya'. I grew up in Colorado and never knew how good I had it untill I moved here. Work, or so they call it, was the reason for the move. Wheelin' might be the reason I move back.
There isn't much land open at all thanks to the liberal views of the state DNR, and the people who abused their right to be there. The UP is pretty good, but still not real challenging. The mud gets old pretty fast. The mounds is fun for about an hour, if you stick to the atv trails. Kentucky, Tennessee, Illinois and Indiana have good off road "parks" but it's just not the same.