I never used to be a lap kitty when I was younger. Laps just didn't interest me at all. Sometimes I'd sit next to the humans slaves, but never on them. I was more of a loner, and I didn't want to let them think I actually liked them.
But all that's changed in the last few years. I've discovered that I really like laps. They're warm and you get a lot of pets when you sit in them. Sometimes, you can even try to steal a little of their food if they're eating.
So if you're more of a loner kitty, I really suggest to try sitting in the slaves' laps. Wish I had discovered it sooner.