Well, I guess you would want to join because you have nothing better to with your time. Okay maybe not. You want to learn about geography and become a geography teacher when you grow up. Nahhh* Okay, then the ultimate reason is you're doing something in the interest of mankind. You're helping to promote world peace and global understanding to establish a greater world order. Sounds like BS? Maybe it'll even be fun.

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Who can join YUP?