But really nice post and yeah... nothing you achive in WoW carries over. I have thought a lot about this after i quit WoW. All that i accomplished in WoW is basicly worthless now. My 2.2k achiv, my insane title, all my reputations and all my gear and gold is worthless. But i did have fun getting it all. I look back and remember when i farmed my insane title. Running down below Rachet and killing pirates with two of my friends while we were on skype chatting and having fun. My raids where we finally got that server first on Yogg to discover that another guild did it only an hour after we finally killed it. They are all good memories.
So cherish the time you play, but remember that in the end you are basicly wasting time in a virtuel universe that will not last. So just do the things that you have fun with. And if the game starts to feel like a chore, stop playing. I did. And i believe anyone can do that, if they are not enjoying the game anymore.