This is why Knives in Counter Strike are a lot more fun to use. It takes 2 stabs to kill someone unless you are RIGHT behind them, and there isn't much of a leeway either side so you can't instant sidestab someone. I think it takes about 5 or 6 slashes to kill someone, so it makes it harder to actually get a knife kill, and when you do, it's a much better feeling than CoD insta-stabs.