There's a ton of people who love water-slides, but very few who would dedicate a large portion of their lives to kayaking technique.
I equate my love for deciding to kayak, to my love for 'really cool waterslides' but I did go to two classes (which didn't do me much good), watched EJ's rolling/bracing DVD and went to the lake after work and on the weekends very consistently. I got my first roll, all by my lonesome, and had to keep at it until rolls eventually became super easy. But it took quite bit of time and effort to get to the point I'm at today, where it's almost impossible not to roll. There was the "Woot, got my first rolls!" period. Followed by "What happened to my roll?/Why can't I roll/ I only have a small handful of rolls I can do in a given day". Rolling on both sides came after a few months and at some point, I guess it finally clicked. Maybe it's the hip-snapping muscles getting into shape, or maybe it requires lots of repetition and combat rolls.
I mentioned basically my commitment to lake-sessions to an early kayaking buddy of mine. He was just starting out when I did, actually a little before, but only began attempting rolls when I did. He really didn't like the idea of going to the lake on his own time and hunkering down to practice the rolling and bracing. That's really all it comes down to. Your own willingness and desire to kayak. People like paddling around on flotation devices, going down waterslides in them, etc. They mostly want instant-gratification. They belong at Water World... or in the very least, a ducky, but even then, I wouldn't look to them for most of the kinds of runs I do.
I have a lot of friends and even my little brother who are wishy washy about kayaking. I think the most I do now, is just let them know how much I love it, offer to teach them, and then forget about it. It's really not for most people and no one had to drag me into it.