[ZenoArrow]

You can't force people to be happy, productive members of society. Imposing that on someone leads to bitterness and resentment. Furthermore, it's boring. If we all define ourselves as being productive workers, can't you see something more important would be lost?

[Banthum]

You can't force people to be happy, but you can strongly encourage them to contribute to the welfare of others, thus sustaining the conditions that give everyone a chance at happiness.