What is your most annoying Logical Fallacy to hear from your partner during an argument/discussion?

Stating opinion as FACT.

Also known as "the modal fallacy".

It is the most pervasive and insidious logical fallacy.

"A statement is considered necessarily true if and only if it is impossible for the statement to be untrue and that there is no situation that would cause the statement to be false." - This is also known as APODICTIC TRUTH.

Many have built their entire philosophical foundation on this fallacy (conflating opinion with fact, which is a category error, also known as "the modal fallacy").