Snow is a change of scenery. It's like nature's costume party. Everything looks so different and magical when it's covered in snow. During the dark, gray, dirty days of winter with bare trees and dead grass, a blanket of snow covering the landscape is a bright, refreshing respite (text from quora.com).
Not only this, playing in, riding on and throwing snow at each other is fun!
And, I bet the adults reading this will agree, seeing kids frolicking in the snow brings back the magic memories of their childhood - AND a deep longing for the ski slopes!