"I promised the Romulans that I would save their planet."Nero's entire motivation must now be brought into question. It's nonsensical of him to blame Spock and the Federation for his wife's death when he had literally years of notice to evacuate her, even if only on the Narada.
And then he didn't. And Nero's wife was on Romulus. Was it a deliberate act of the Federation to accidentally arrive just too late to save the central planet of their former enemies? Sounds like something Nero would believe. Humans today believe far more insane things.