Welcome back to Otaku Insight, this feature will attempt to ask the question about characters and anime well hated by a good portion of the community to see if said hatred is deserved. We start with Sasuke Uchiha

Sasuke is a symbol of dark edgy emo entertainment, too cool and aloof to need anyone but has a mind focussed on achieving a task, revenge! It's difficult not to draw comparisons between him and Shadow the Hedgehog and while it can be really irritating how popular Sasuke got, it was only the start of the edgy emo trend as we then meet Akatsuki with the dark coats, the purple manicure and penchant to preach about pain, death, destruction, pretty much anything that involves cult like activity.
Then when you get into the rest of the Uchiha you realise how messed up things got story wise.
But it wasn't until after Shippuden ended that Sasuke came back alot more mellowed out and calm, accepting he was in the wrong but not quite ready for normal life exemplified by his interactions with his daughter.
So to answer the question is Sasuke Uchiha really that bad?
Looking back there are alot of things about Sasuke that annoyed me but the fact that he was out of action quite frequently between the original and Shippuden meant that when he came back you didn't feel too annoyed seeing him especially when his replacement was just awful early on.
The only thing I can really blame Sasuke for, is starting Naruto's emo trend. Gaara, Akatsuki, Kabuto, Obito, Madara, in fact Akatsuki are so notorious for it that their leader is called Pain!
The fact that Sasuke has grown out of his emo phase speaks volumes about his development as a character.
Conclusion: Not really that bad anymore, character development has saved Sasuke more than once. The really bad characters are those who followed him because Kishimoto just milked the emo trend to death.