I just wanted to add my personal experience in this matter after i finally found the time to play PoE 1.06.
I had about 80 hours of playtime and i have to say that until this point PoE was one of the best RPGs i have ever played.
A few hours later i reached Twin Elms and hit the level cap shortly after. And the same thing happened like several times before with capped games. Every piece of motivation i had to solve any sidequests, talk to NPCs or exploring new areas, died down to a minimum.
Right now i´m considering if i wait for the expansion to see if the included cap raise will fix this fatal design flaw (i know most people have no problem with this but for me it´s a punch to the face from the developers), if i use a mod to raise the cap or if i just force my self to play a game that´s just not fun to play anymore and get it over with.
There are so many Gameplay options you can choose in this game if you want to. But the level cap? No, that one is forced upon you. And the argument that it would be too easy this way or it break the balance is also weird because then you would also have to remove the lower difficulty settings because everything lower than hard is a walk in the park anyway.