Well you would be right...
...(and might be right anyway) if the reason I enjoyed it was the human suffering part. In fact, I am a strategy and tactics fan. I've been reading books about warfare since I was small. I've been playing war games since they were invented (you can quibble over whether the first was Tactics II, or Risk, or chess, or tic-tac-toe, or something more primitive using a thigh-bone and your hairy neighbor's head - although I never played the latter.).
It is a guilty pleasure for me since, obviously, there is suffering attached to war.