Author of 'Hellfire', 'Riders of the Storm', 'House of Pain' (sequel to House of Hell) and 'Deathtrap' (prequel to Deathtrap Dungeon). All are available for download here or at: www.ffproject.com/download.htm
That depends on the reason. Do you need a weak critter to give the player some satisfaction or change of pace? Is the enemy more a punishment because the player did not find another/easier way? Or is it just the final boss of the story? Enemy stats should have a purpose IMO.