I regularly go to the gym and I notice very few people clean the machines. Therefore if I want a clean machine I clean it myself. I'm not realky that bothered but if I particularly want to I clean it. Which makes me think...shouldn't this just be the norm? I used to always clean a machine after use but as most people don't and not knowing if a machine has been cleaned I'd therefore need to do it myself...it seems to make more sense for people to clean it themselves before use and if they don't care they can just leave it. Then it saves people cleaning a machine after use, when the next person will either not care or if they do will need to clean it again if they're not sure if it has been cleaned!