wanting power

In a follow up to my last post, I've also been thinking a bit about power.  Here are my thoughts so far...

What is power?  I think power is essentially influence.  It's when you're able to influence others' and your own thoughts, actions, and feelings.  It's so easily corruptible though.  Power can change the way you see yourself.  It helps you get lost in you.  It can feed your sense of self-worth in different ways.

When drugged with power, people will do anything.  Like that famous prison study where participants were split in half-- half were to pretend to be prisoners and the other half would be prison guards.  The guards began to take their role way too seriously, and the study was eventually stopped early.  The guards' self-identity began to change and they didn't see how cruel they were becoming to the prisoners, they were just doing their "job."  Who we are can change drastically with power.  It can be frightening.

But why do we crave power so much?  I've had a harder time coming up with an answer for that one.  Is it just a drug-- one taste and you crave more?  I feel like there should be more to it than that.  Thoughts??