Do you "need" to wax it? Probably not. Should you wax it? Hellyeah. It's a ritual. You have to appease the snowboarding gods and bond with your board, or Bad Things Will Happen.
Ye see this is why I want to learn to wax my board. I wanna be involved in the ritual!
I'm on the snow every day and get my board waxed for free. But I'm still considering learning myself. Generally how long does it tax and how often should I do it? Have to see is it worth the extra time n effort when I can get it done for free.