What's the meaning of "should" here? The news is from from NewYorker.
Steyer’s pitch to the donors was simple: “This is the best deal I’m ever going to give you. You should want to give this money, period, even if you never got anything. You can go and speak to the highest people in the Democratic congressional leadership. And we’re throwing in the President of the United States as a gimme. So you should be begging me to come.” To insure that the event left an impression on Obama, Steyer invited fifteen top donors to join him for an intimate conversation with the President before the reception for a hundred. Jim Steyer said, “Tom really hammered Obama on the pipeline.”