To be fair I think the asshole shtick was only a couple of shows like House, Sherlock and Elementary. I don’t know but I feel like being at least a little bit of an asshole is a requirement for that type of character because what kind of “know it all” isn’t a little assholish or irritating. Shawn from Psych, Jane from Mentalist, Monk or the dude from lie to me are all abrasive.

Though I would agree with that it would be nice if writers didn’t use that trait as a crutch for character development but as long as they give me some good mysteries and the main character is charismatic, I’ll watch this type of show till my dying breath.