It seems to me that it's the second choice.
http://en.wikipedia.org/wiki/Motivation#Drive-reduction_theories
If motivation consists only of drive-reduction, what is the perfect state of a human being?
Competitive, hard driving
Not hungry, thirsty, no pain, absence of fear, basically a coach potato
Constant change, always re-establishing homeostasis
Gradual movement from primary to secondary drives
3 answers
Me, too
Me three!