This is something kids are really good at doing. Kids are full of wonder, curiosity and openness. (Most)Kids don't take other people's reactions into consideration when they decide to do something, they just do it. As adults, we try to teach them about socially acceptable behaviors and unwritten rules of society to save them from the anguish that being "the weird one" in school/work/sports. At the same time however, kids are sacrificing instinctual, unadulterated joy and enthusiasm with which they approach life. This makes me sadder than words can express.
Maybe the grown ups in the world should take a lesson from their younger selves and worry about what makes them happy.