Let's take a look at Obito's rap sheet.
Caused the death of Minato and Kushina ( The main characters parents).
Killed the third Hokage's wife.
Set the Kyuubi on the village which slaughtered many villagers.
Creater tension between the clan and the village.
Helped murder the Uchiha clan.
Played a part in the bloody mists practises.
Started up Akatsuki.
Set Pein on Konoha which caused damage that still exists today.
Sent Sasuke down a path of darkness.
Killed Konan with a rusty pipe.
Started a war that has killed over 40,000 shinobi.
If only Rin retired.