I wear MTB shorts as well. I like pockets which is the primary reason. I could wear spandex since I mainly just ride around for a few hours (I'm not going into coffee shops etc while biking so the MTB shorts are not due to not wanting to be seen in spandex) but if I got those I would be forced to get bike jersey to carry my phone and any small snack so it would be a double whammy of cost (shorts AND shirt). So for now I'm good with MTB shorts and tshirts. I had to switch to MTB shorts because I am riding more on my new bike and just shorts were not that comfortable on rides exceeding 30 miles.