I'm sorry to tell you your vanilla experience means nothing in MoP.
You may be having problems with ret but until you understand the real cause for those problems (gear, experience), then you will never learn how to make this spec work.
You're still not listening. I never had problems making Ret work, I simply moved on to something equally fun to play and far better designed; my intent is not to discourage new players but help them fully understand what they are setting themselves up for.
If you truely enjoy Retribution and feel you're playing it to it's full potential, then I'm happy for you. I've simply had a different experience and can no longer see it the same way you do. Call it lack of experience if you wish though it is not the truth, I just got tired of being a glutton for punishment and closing my eyes to it's flaws.