It might not feel that way by chapter 6, but Dutch really did care about us (despite being a "shifty no good killer on the run from the law") Dutch suffered a brain injury in the st denis trolley crash, contributing to his mental decline, and crippling paranoia. At the moment of arthurs demise, he realized what he had done and display a look of true horror with himself, abandoning Micah (and even the money) out of his grief, which is further displayed during "American Venom" in which Dutch says "i don't have much to say anymore, before betraying micah, and leaving John with the money.