Adults resort to simplistic dismissive replies like that also. They taunt and harass other people in the world around them.Why? Who knows. Maybe because they don't have enough to keep themselves content in their own lives so they are looking for a diversion. Their own "toys" aren't enough for them, so they want someone else's "toys" in addition. Maybe it really all does come down to power and control.
"You are a smug unhappy little man and you treat people like they were idiots." (from "Tommy Boy")