As I said, you can't have everything you want as the game can't accommodate to every single person. But I personally have never ran a sim of my char or done any theorycrafting in years and I'm 13/13H. You can find a nice relaxing guild and have fun that probably doesn't overly care too much about progression. Those are casual raiding or pug guilds. There used to be tons of those before Cata.
If you are naturally skilled enough to clear content, then you are more than welcome to do so. If the bosses are beyond your skill/gear and you don't want to get better, then you have two choices, get more gear or wait for nerfs. That's the issue, everyone wants content right this second, there is no waiting, no working, no gearing. They want it now and only now, any other time is unacceptable to them.