Was Rin's death the only reason which has led Obito to start Fourth Great War?


It seems like there weren't any other reasons for Obito to consider Mugen
Tsukuyomi.

Did Obito had other motivation, except Rin's death?




Rin's death was just the final spark to make Obito start the Fourth Great War.
His hatred towards "evil" shinobis, current world and the desire to fix the
world were evident from a long while (him always trying to compete with
Kakashi to get stronger and save his allies). He was searching for a way to
bring "peace" to everyone which is when Madara came in, in the times of
despair Madara presented him a hope of "Infinite Tsukuyomi" which to the
strong desires of Obito looked like the perfect solution. I won't just call it
manipulation, for that time, the goals of Madara and Obito were quite similar
and it was more of an agreement than just manipulation. Madara found the
perfect candidate to carry his will, Obito found the perfect solution he
deemed "correct" in his twisted, despaired mind.




Rin's death was just the final spark to make Obito start the Fourth Great War.
His hatred towards "evil" shinobis, current world and the desire to fix the
world were evident from a long while (him always trying to compete with
Kakashi to get stronger and save his allies). He was searching for a way to
bring "peace" to everyone which is when Madara came in, in the times of
despair Madara presented him a hope of "Infinite Tsukuyomi" which to the
strong desires of Obito looked like the perfect solution. I won't just call it
manipulation, for that time, the goals of Madara and Obito were quite similar
and it was more of an agreement than just manipulation. Madara found the
perfect candidate to carry his will, Obito found the perfect solution he
deemed "correct" in his twisted, despaired mind.

