I draw, therefore I am. I write because I just plain can't stop. I had to put a protective covering around my paperback Roget's because the cover was threatening to come off. I love Visual Thesaurus because it's a literary video game.
It sounds best with a British accent, specifically the cockney Dick Van Dyke employed in the Walt Disney version of Mary Poppins. He said it in a way that sounded definitive while saying that Mary was off her crumpet at the same time. I learned it with that movie, and it always brings back good memories.
Aside from the fact that I just don't like the sound of it, it seems to lead to trouble and apologies. Most people use it to explain away something stupid they've done based on one flimsy scrap of information that they couldn't bother to research. I can accept assumption - so long as it has been PROVEN. An assumption is incomplete and irrelevant without a premise and a conclusion and solid facts to back it up.