I wouldn't call DU a good person but at the same time I would not call them a evil psycho (again depends on the player choice) but yeah I am curious as to why you think that way.[/spoiler]
Well as I've pointed out in my previous posts in this thread,
it's because the game locks me into certain things about the character which are not under my control as the player, and all those things in my opinion are evil psycho things, for example the squirrel event, waking up with blood on my hands, and even the simple thing of having evil urges (which are not even remotely the same as the nightmares that Charname has in the original games).