Honestly, people hate on the shotgun too much. It does actually require the most accuracy to use (during CQC), considering its slow fire rate (EDIT: I forgot to say that people exhaggerate the spread. The spread actually isn't that high, especially during CQC, which is why it can do so much damage from longer ranges - the spread is actually really low. The bullets themselves probably only deal as much as a pistol-round each.). Although it does 1-hit kill, it very rarely does, considering it bugs a lot and decides to 1-hit from medium range as opposed to close range, when your reticule is centered RIGHT over their FACE. It's very annoying to me when I'm shottying, considering that's what it's MADE for. It's a good gun, and it's not better than anything else. For people like me who carried a shotty/l9, I'd have to whip out my l9 every time I saw somebody more than 30m in front of me. I got really sexy at quickscoping, though, so it was alright. If you think shotties are noob...
..reconsider.
-Slow fire rate
-Limited range (compared to any AR/SMG, you know it. Come on.)
-CQC bug (almost NEVER 1-hit kills)
Pros:
-1-hits from certain ranges
-More easily contacts 1-hit spots with a spread of bullets
See? :/ Plus people using a shotgun have to deal with being called a shotty noob EVERY time they kill somebody. It's a miserable existence, which is why I went back to using an m416. It just wasn't worth it, the constant nagging. Also, now that the shotgun is nerfed, there's no point in using it. Thanks, Nexon.
And nutshots...
Those are cheap as fuck. They're basing their decision to preserve it on the opinions off of a bunch of excited children.