Useless emotion?

[Cingal]

so, you would rather live without happiness than without grief, self-pity, and envy? and don't say it would make you a better person, as without happiness, we would achieve nothing. happiness is the carrot tied to the end of a stick, and without it, there is no point in chasing down dreams and making them reality.

Hate, anger, envy, can also drive a person towards a goal, happniess simply being a reward.