How immature is the President?

In a speech during his around the country "Sell the Healthcare Legislation, President Obama mocked Republican references to life in America, as we know it, coming to an end... Armageddon, as it were. He joked how after he signed the bill, he looked out the window for a meteor shower to destroy us. While I firmly believe the passage of this legislation will change America drastically, and not for the good, I do not subscribe to comparing it to Armageddon, but at the same time I think the President of the United States mocking the opposition, especially in the face of overwhelming anger by the American public, over healthcare shows a high degree of immaturity on his part. It coincides with his public rebuke of the Supreme Court during his State of the Union speech. He is entitled to his opinion, but he degrades the Office of the Presidency with his remarks!