Why are we in Afghanistan?

As Canadians are coping with the deaths and injury of further Canadian soldiers in Afghanistan,a new story out of there leads one to wonder: what in the h--- are we doing there anyway? Yesterday Afghanistan ordered hundreds of South Korean Christians to leave the country, accusing them of seeking to undermine its Islamic culture. As reported in the Star, the accusations come amid increasing intolerance and violence against foreign troops in Afghanistan, a crackdown in the capital on drinking and prostitution linked to foreign influences, and the recent announcement of a plan to reinstate the vice and virtues ministry, which enforced its harsh version of Islamic morality under the ousted Taliban regime. So I ask: are Canadian troops dying to prop up another version of the Taliban? Is it time to bring them home and force George Bush to deliver on his promise of democratic change?