7. "Counter-Strike Source sucks compared to 1.6!"
In a pre-Modern Warfare world (yes, that's how we count time when it comes to multiplayer shooters), Counter-Strike was the king of the polygonal castle. Valve's shooter was at the top of its class, presenting smart, fast-paced shooting gameplay that was a hit both with casual gamers and hardcore shooter fans alike. It was all over the competitive game scene, and with each update came new weapons, maps, and reasons to keep on AWPin. And then Counter-Strike: Source came out, and was a little different, and people flipped the hell out.
Source wasn't different enough to be considered a full "sequel," and felt similar enough to regular Counter-Strike that it would be familiar to those who have spent hundreds of hours bunny-hopping around de_dust (de_dust2 was better btw). It wasn't exactly the same, though, meaning those very same players would need to relearn the physics, and the timing, and the strategies. It was so very different without being different enough, causing fan confusion that led to many, for some time, to just keep playing the most recent version of regular Counter-Strike.