I infer from the downvote that I phrased badly - not "what for?" in the uncurious sense of "what loser would want that without a need?", but rather "is this for

I infer from the downvote that I phrased badly - not "what for?" in the uncurious sense of "what loser would want that without a need?", but rather "is this for a specific purpose that would constrain you or purely for joy?"