As or my ride...mostly sport. I will probably ride to work, but I generally just really enjoy biking. I will bike around the city, and maybe in the hills over in the country. I want a bike that will let me hop a curb and go up a steep grassy hill as a shortcut. I want something I can ride on gravel. I want a bike with tires that aren't going to go flat on me because of a small rock. And yet, I want something that will be fast on the road and bike paths. I will bike mostly on pavement, but I do not want to be limited to it.
My idea of a fun day out would be to bike all around the city, trough streets, bike paths, fields, and dirt trails in the woods looking for geocaches. It needs to be versatile and relatively comfortable. If I can get a bike that can do this while being closer to a road bike than a mountain bike in terms of pavement speed, I'd be very happy.