Because it's CRAZY. This is me knitting stockinette stitch, continental style (my uje.) I'm often gawked at in awe by other knitters when I'm knitting at my LYS but I kind of just figured the said-gawkers might be English style knitters (i.e. throwing the yarn with your right hand) and so I just chalked it up to the novelty of seeing something totally foreign to what you're used to. Now I'm thinking maybe I was being a bit modest because DANG THOSE NEEDLES ARE MOVING FAST.
If you haven't ever watched yourself knit, you really ought to have a knitting buddy, SO, or other willing and able volunteer take a video of you and hashtag it with #seemeknit. It'll blow your mind, I swear, it's like recording your voice for the first time, hearing it, and thinking, "That's how I sound??!" Fascinating how we all take totally different paths all to end up in the same place, no?
Speaking of different knitting styles, have you ever seen someone hold a straight needle under their armpit and knit from it? It's lightening fast and amazing to watch. Here's the Yarn Harlot demonstrating this style:
Watching videos of other knitting styles on Youtube really makes me want to try my hand at a new method. Maybe I'll finally find a use for all of these old straights I've been gifted over the years and subsequently hoarded for no reason at all. I could probably dedicate a whole blog to my knit-hoarding problem so I'll just gloss over the whole subject entirely like it doesn't exist (ironically that's probably how I developed this problem in the first place...)