In the USA I strictly ride road bikes, but when living/working in the Philippines I split riding duties between my carbon Muluk and Marin Four Corners Elite. My rides are usually on mixed surfaces and having chubby tires is a bonus. I could have done fine with a full suspension MTB, but where is the fun in that. For me the fatty is kind of a novelty/indulgence, but it sure puts a smile on my face and gets a lot of smiles as I roar by on Dillinger 5s. Moreover, my ability to get much of a workout riding the crowded, rough streets of Manila is limited, but the added rolling resistance of the fatty truly gives me a good workout in a shorter distance.