So only living in a desert makes sense to you for someone to cut it off? You can take shower everyday but still sweat and not prevent getting dirt in some areas of your body. So why not do something that will already help you to get rid of something that has no use but only hoover the dirt?
This is like someone growing his facial hair like those religious people saying it doesn't bother him if he can't prevent dirt because he'll take shower everyday.
Personally, i'm glad my father decided to cut it off for me. Because when you're still a baby, you feel no pain at all, because it's soft and it heals pretty fast.