Warren Buffett, the 93-year-old billionaire chief of Berkshire Hathaway, mulled his future in telling shareholders on Saturday that if he were lucky, he would have another six or seven years but added that "it could end tomorrow." Tens of thousands of shareholders, who over the weekend made their pilgrimage to see the Oracle of Omaha in person at Berkshire's annual shareholder meeting, hope it doesn't end that soon. "The crowds will be smaller when Buffett isn't here, but the company will still do well," said Jason Garner, a 20-year-old student from Queens University in Kingston, Ontario.