Yeah, you have to grind for legendaries and ascended items. I won't get into the debate about ascended items, as that has been discussed to death (basically, they said that they'll fix it, but we'll all just have to wait and see what they do to supposedly 'fix' it). As for legendaries? I always think of them as being that item that players can grind for if they want to. If you don't want to grind for it, no worries... you can still play the content. You're not that much of a liability without a legendary. In fact, I was playing with a person last night who had a legendary sword and he was completely rubbish haha. Honestly, I revived him about 12 times in 10 minutes.
Yeah, but Legendaries prove to be the better investment (if you can purchase or get the precursor to drop) because it never never changes. They're updating the Legendaries to reflect Ascended gear and the theory is that for the grind, the Legendary's stats will keep in line with the top-level gear.
I've also pretty much given up on you. A Square'Enix fan never really sees a grind when there is one.