@cbsnews: Despite being “too old to stay as president,” Biden said at the first night of the Democratic National Convention that he’s grateful and has been “blessed a million times in return with the support of the American people.” “For 50 years, like many of you, I gave my heart and soul to our nation,” he said. “… I’m more optimistic about the future than I was when I was elected as a 29-year-old United States Senator.” #biden #democraticnationalconvention #dnc #chicago #illinois