Nice post, Amineri. I totally understand your concern, and I agree that some of us may sound like we want to make the game 10x harder so that it becomes more challenging (and ignoring those who want to enjoy the game in a different way or are simply more casual).

In my opinion,

1. If the game is made "too easy", then it basically discourages team work because everyone can solo and it defeats the purpose of playing a mmo if you ask me. Worse, it creates a cycle and slowly kill the community because it does not draw you into the online world anymore.

2. If the game is made "difficult" enough, sure at first it may be frustrating that you cannot easily progress through the game by yourself. Remember though, there're always people around who are willing to help others out and that is one of the beauty of playing a mmo - making new friends! You don't have to be super good at battles in order to enjoy a more difficult game because your friends will "compensate" something that you're not too good at and at the same time you can provide what they lack of as long as the game provides goals that require teamwork.