What drives all of us?

What is the common thing that drive all our actions in our lives? In my opinion it is the urge for satisfaction satisfaction.Every one tries to satisfy himself in some other way or the other.For some it may be physical urges ,for others it may be intellectual or spiritual.From a saint to a criminal, no one can deny that our actions are based on our need to satisfy our desires (even attaining moksha (liberation) is also an element of desire if you think about it).Also people try to maximize the number of choices available to them.The more number of choices they have the more happier they are (though this may apply only to worldly matters).