I agree... to each his own, but I find running very boring. If you're into the Paleo movement, it's recommended you focus more on slow movement such as walking, hiking, biking as well as full body exercises: squats, pushups, etc. Running for prolonged periods of time regularly can do our bodies more harm, especially if we're unfit in the 1st place. So it's just not a sustainable form of exercise. Better find an activity that's less stressful and more fun.