i love obito's character and him becoming tobi , dude we cant understand his pain
not everyone can choose the right path in worst situations .
while you think you are dieing , you give one of your eyes away .
when you escape from death , you see that you are traped underground for god knows how much time,
when you finally get out after a long time, you witness your love die by your best friends hand .
and the rest of the story is Unknown . :D
anyway obito had 2 options :
1. after all this , go back to village( the right way )
2. or fall on the path of revenge as he did , as sasuke did .
you cant call that annoying , this events are not easy to live with .