Just asking a philosophical question, am. Am I an evil person for using the ToB traps and even normal traps on poor innocent liches and dragons etc?

Summoning the Kangnaxx cycle of liches onto a few spike traps is just too much fun, but I have a feeling I'm not supposed to be doing that. Killin the dudes in the sewers early on, I tossed in a few area effect spells to piss them off, and watched them waltz into an ambush, I know these tactics make sense in real life, but since monsters have no save vs. trap, it makes things insanely easy.
Does there need to be a trap mod making them a little harder t use, giving monsters a chance to dodge them, make saves, or even disarm them if they are theives? Or making trap setting an act that turns neutral targets hostile?
Oooooh, and I forgot how the fight goes, but can/should I use a few on demogorgon?
"You know what they say about large men with small axes don't you? Good... I don't either."