Why did the war hawk want to go to war

The War Hawks (mostly Southern and Western representatives in Congress) wanted to expand the US by adding Canada and Florida and other adjacent lands, and to move against the Native American tribes. So it was more than just the desire to stop the disrespect by the British in stopping US ships. Fortunately, despite the failure of the Great Lakes campaign, and the loss of Washington (burned by the British), the Battle of New Orleans (1814) did restore some national honor with its victory over the British attackers