I need "help" with Diablo 3

To start thing off, I am no troll. I didn't go through typing all of this to be like "Can't wait to piss people off!" I came because I REALLY need help. I'm finding it very hard to enjoy this game. I'm counting on actual Diablo fans would bring up the golden and highlighted parts that I just might be missing. I got Diablo 3 and Reaper of Souls for like $29.99 and to me, $30 isn't worth a troll. So I brought it home, started playing and I just could not enjoy myself. The world was very bland, it felt like I was going nowhere. The enemies were just too much of the same thing. And I beat about 3 bosses so far, and I have not taken a SINGLE hit in the game. I think I have it on normal mode. I'm a witch doctor, so my move set is pretty weird, in my opinion. It just feels so copy and pasted, as in: (projectile, projectile, slow down, different projectile). I really want to enjoy this game, but I just got so bored I had to stop playing. Does it pick up later on and become super great, or is it this was all through the entire game?