What kind of puzzles are you talking about? Jigsaw ones? There might be more joy in the process of solving a puzzle and in the anticipation than in the fulfillment.

Joy is fleeting, as the Buddhists say. When we search for joy, we enter a state of constant craving, which is more like suffering than enjoyment. We addict ourselves to one disappointing pastime after another. We're liable to become confused consumers and pawns in some billionaire's game.