Originally posted by slartibartfast01 "With all due respect" could mean anything depending on how much respect the speaker believes is due. It always sounds sarcastic to me.
It is a suggestion that the position being referred to is worthy of some respect.
You can acknowledge a point is well articulated and thought out, but is still in error.
It is almost always a kind of peace offering.
It's the exact opposite of "You're a complete idiot and here's why."
Should you choose to interpret it negatively, no one can stop you, but it was quite likely not the intention of the person who said it.