Neither do I, but my wife and daughter both do. I was typing a university thesis years ago, went to make myself a cup of coffee and came back to find a cat asleep on the computer. I had to delete several pages of gibberish.
Well of course. You don't think I make all these typos myself do you?
My lap "kitty" goes from my lap, across the keyboard, onto the computer desk, and over to the dresser where his food is located. Once he's satisfied, he comes back and makes sure to press several times on the keyboard before settling back into my lap - purring loudly.