Looking at Spot, I see he does not mind being dirty. I would take it even further and state that him being dirty (exposure to dirt) is beneficial towards his health. I would not see it any other way for any other being including myself. With that I do not mean to go reeking like a dead fish around the office. If that is the case than the microbial cultures on the body obviously can not find a healthy balance. Maybe it's because of stress, food, surroundings. Or because you soap your skin too much and prevent it from creating a healthy, balanced and diverse bacterial population in the first place. It could take a few bumps and lifestyle changes to get there. Maybe it's all not that convincing to you but still,... be more like Spot, be a little dirty.