If I wanted to solve cases the right way, I would join the police force.
I'm playing a video game in order to escape reality. Also, to shoot people in the face.
I don't want to have to do real life tasks in a video game. Being a "play by the rules good cop" falls under the "workout and eat breakfast in GTA: San Andreas" category. Sure it's close to real life, but that doesn't translate to video game fun.
I'm not spending 60 bucks to be Nancy Drew.
"Civilize the mind but make savage the body."