I know, from reading on Crochet lists and from my own experience, that knitting doesn't work for everyone. Some people who crochet want very much to learn to knit, but have neurological or physical problems which make the "yarn slipping off the needles" and other knitting-coordination challenges too difficult or even impossible to overcome.
For them, knooking makes a few knitted items possible (ribbing on a sweater, for example).
In my own case, I was never able to remember the one and only cast-on I had been shown years ago, and didn't know about Continental-style knitting. The combination of the two brought me to a stand. Without casting on, of course, no knitting can take place, and years of maneuvering yarn with my left hand for crochet made that hand very "smart" w/regard to yarn-tensioning and my right hand clueless.
Earlier this very year, I joined a community-service group of women who (listen up, any knitters who are prejudiced against crochet...) were open-minded about crochet. :cheering: They were more interested in the actual number of hats, neck scarves, and baby blankets the group could produce rather than how said items were produced. I can generate hats like nobody's business, and neck scarves as well, and that's what they wanted to see.
At the monthly meetings, held at a member's house, there are only five to seven women. A nice, small group. As I was walking by one of them after having put a hat on the stack in April, she was "magically" making loops on her needle with (wow!) ONE HAND. I stopped dead.
"Are you...casting on?! with one hand?!" [excitedly]
"Sure. Anything to get loops on the needle fast is fine."
"But...I had no idea there was another cast-on than the one I was showed that I've never been able to remember. This is great!"
"Oh; there are so many cast-ons that I don't think I even know them all."
So that logjam was broken. Yes: Backwards Loop Cast-On.
Then I looked in books, etc. (Internet, too, but didn't have the vocabulary yet) for alternate methods of knitting. It was that right-hand thing...and I also saw some of the many cast-ons.
Now I'm a beginning knitter, working in Continental style, and have taken a couple of hat- and scarf-making classes at an LYS.
But not everyone has the benefit of two fully functioning hands. I didn't even always have that: for 15 years I had to choose between crochet and my job due to carpal tunnel syndrome. This is how I know from the inside out about hand trouble.
So...knooking may be the only knitting-like craft available to some people. Don't just jump in and tear it down before realizing that, for them, it may be their only possibility. For others, it may become a bridge to knitting.