Laravel is a PHP based Web development framework which is just the Symfony framework with a few cosmetic changes. I cannot find a reason to use Laravel instead of Symfony.
CodeIgniter is a PHP Web site development framework struggling to remain relevant with many competitors presenting fresh, new, and popular alternatives.
Technology complicates life. Google adds Glass to your privacy invasions. If you think that is bad, wait till every Glass user feeds into Facebook.
How useful are your dates? Database date formats are flexible but not necessarily fast for all your queries. Here are ideas for alternatives.