These days, "ambition" is a dirty word. People who are "ambitious" are viewed as either selfish or unrealistic. ("That sounds a bit ambitious" is code for "you are going to fail.") Yet it wasn't always this way.
In all my years in business, I have yet to hear someone say: "I love corporate politics." On the other hand, I meet plenty of people who complain bitterly about corporate politics—sometimes even in the companies they run. So, if nobody loves politics, why all the politics?