To quote the HVGN,
"Resident Evil 4 was the game of the year, but it took me until New Game+ to see that".
Just because a game isn't fun now dosn't mean it won't get fun. Look at every Final Fantasy game that's not a loving hallway simulator, half the game is grinding but when you finally do battle with a giant boss and take it down, you get a giant rush of endorphins that make your braincells have a collective climax. You enjoy that but not the grindy bits you had to do to get that far in.