"I'm mourning a Geth!" said Tali with disbelief after Legion sacrificed itself. See, Tali, that's perfectly understandable. Me, on the other hand, ohohoho. Almost six months after finishing the last game I'm still mourning a bunch of fictional characters, and feeling insane remorse for making Shepard kill himself for the greater good while leaving Tali behind holding onto any tiny glimmer of hope to see him alive again only to find out she won't.
Dammit, BioWare. I will send you my psychotherapy bill.
Mass Effect (c) BioWare/EA