A friend of mine was told this last week shortly before his last day with his former employer.
As he was telling me about it, he knew his boss was delusional and wouldn't care about what others thought of him. But still, the main reason he gave for resigning wasn't about pay (he makes a good living and it was only a 5% increase for his new job), but it was about the boss being a smug assfuck to everyone.
The boss responded, true to form, “Better the devil you know than the devil you don't.”
(Personally, I think this is a bullshit saying, especially for this sub)
My friend just stood there in stunned silence for a moment, then responded,
“Ok man, I'll take my chances.”