I feel like this needs a preamble, but it doesn’t have one. Well, now this is it.
Jon went and saved Daisy from the coffin. Daisy. Who almost killed him. Who made him feel the most powerless and afraid he’d ever felt. He went in there and risked his life. He wasn’t even sure if he would make it back. But he was willing to try if it was even a little bit possible. He was going to save the woman who’d killed him.
How many people would do that? I don’t think he thought twice about it. I’m sure he knew he could very likely die. (I guess we know part of why he went down there, that he didn’t value himself enough to care. But that’s not my point right now, even if it’s a very sad one.) He went down there because he saw something worth saving in Daisy. Even if he went himself because he thought he wasn’t worth anything, he still had someone go down there and try. There was something worth saving, according to Jon, in Daisy, the woman who’d done terrible things and nearly killed him. It’s part of what makes Daisy try to change, to be better.
But he doesn’t think there’s something worth saving in himself.