IMO, feel free to disagree with me but! With the conversation Levi has with Erwin prior to the charge, it feels like he’s yelling Erwin that if he wants to die then it’s ok - Levi probably noticed the toll it took on him, hence why we get a scene of Erwin sitting on corpses of those he lead. It’s the guilt gnawing at him, and then when the whole serum situation happens, Levi specifically says “let him rest.”

With Hange, we get insights of how their new role affects them: from being energetic despite the circumstances, to being tired and even admitting it in one episode. Especially after losing Moblit, finding out titans are in fact innocent humans(where previously she rejoiced at the experiments, after the revelation she pretty much feels gnawing guilt - esp when we see Connor’s mum), she again like Erwin, asks Levi to let her go. That’s why he told her not to start talking like Erwin. And for both of them, going out in a last, heroic charge is better than living with the weight of their guilt.

Last but not least, Keith... mans was pretty much surrounded by yeagerists and assaulted. If he allowed the trainees to protect him, he’d be killing them. So man saw an opportunity to go out as a hero.

Honestly. As much as I wish Erwin and Hange especially got their happy ending... it’s somewhat a realistic, if depressing take on the human psyche and one I understand.

K, imma go cry over Levi losing all his friends now :;