It's not a question of happiness, it's a requirement. Consider the alternative.
Drive slow and enjoy the scenery - drive fast and join the scenery.
Good ideas are a dime a dozen, bad ones are free.
Materialism is the only form of distraction from true bliss.
Seeing the light is a choice, not seeing the light is no choice.
When all is lost, ask the I.R.S. - they'll find something.