My road bike is a cyclocross bike. (Waterford X-12) Cross geometry suits me well (my other bike is a Kona Dew: a cyclocross geometry commuter). I have 28 mm randonneur tires and can really kick on the road. It handles dirt fine, and if I want to kick in the dirt all I have to do is put on some knobbies.
If you find a bike you love, don't worry about what it's called (cross, road, sport, touring, racing) if it suits you and feels like "yours" and can be outfitted for the activities you want, go for it! Everyone is different, every body is physically different and reacts differently. Go with what you love! (and when you feel that bike love you will *know*!)
"If Americans want to live the American Dream, they should go to Denmark." - Richard Wilkinson