Void__Dragon wrote:
The Emperor has never shown to be a man of particularly great compassion, empathy, or brotherhood. He was not, as is commonly believed, a good guy.
He certainly felt a lot of compassion towards Horus. 'Twas partially why he ended up on the Golden Throne.
Terra would be overrun by Daemons from the Webway, and the Emperor would almost certainly succeed in whatever His goals were (whether turning humanity to Chaos or simply ruling it while under the eyes of Chaos or something else). Humanity pretty much wouldn't have a chance. Too much is invested in the Emperor by the Imperium at this point.