When it comes down to it, Canada was exceptionally open and sympathetic to what happened on Sept. 11, and the US showed us big tears and riled us all up for war to catch Osama and teach the Taliban a lesson. Well Osama was found sheltered near Pakistani military installations! The logical justifiable thing to do then would be to hold accountable the Pakistanis responsible for this! For everyone's benefit and good, even the Pakistani people!
Now about leaving, and saving lives : Canadians don't take orders from anyone (that's why we are missing from Iraq) and we still enjoy massacring Taliban, this I can assure you of. We'll stay till we want, and not act like children and stay where we are needed... but the US can go on wild goose chases without us in the future.