It's not your fault, Karkat. Don't carry that burden. It will drive you mad.

[ not that he has much room to talk, okay? the Signless still struggles from time to time with wondering if the whole rebellion was even right, considering the lives lost in it... ]

Don't trouble yourself with "what ifs" and chasing after shadows. What's done is done. It cannot be changed, no matter how much we wish otherwise.