
I don't think "saving" him literally means to let him live. He'll probably still end up dead in the end. I think what Deku means is that he wants to free him from the burdens that made him to be the person he is today. Not to say that makes him any less of a murderer. I also think it's good for Deku if he can learn what really made Shiggy a villain, for future references maybe. Plus, I think 'saving' Shiggy will probably be a really vital part in getting rid of All For One for good.

I'm sorry, but he didn't want to murder his family, what? His quirk manifested and he literally said himself, he didn't know it was his quirk, that he thought it was a villain attack-
I agree he intentionally killed his dad, but that was because he abused him. Not that it would be excuse, but it's kinda understandable.
I agree, Shigaraki is not a good guy, because he was raised by a bad person and taught that murdering was a good thing. Again- i'm not disagreeing with you, but saying he 'wanted' to murder his family is kinda off, 'cuz it was an accident-
I knew this was going to happen bro. I'm actually sick of this "aww the villian isn't evil, he's just misunderstood; I can definitely help him" shit, it's stupid. Shigaraki is one that never ever had a solid reason to murder his entire family and go on to murder thousands of people. He just wanted to do it...and now Deku is gonna 'save' him ???