Esco,
To answer your question -- I agree with Jame's Bond's quote above... This is the main reason it sucks... Also, compared to other roads you have a disproportionate number of 18-wheelers on the 401, heavy traffic -- and then when you can get going then there's too many speed traps. Like I said, even with all the downsides, it's still, by far , the best, fastest, most direct way -- but that doesn't mean it can't still suck! Some people prefer a little scenery!!
BD