Seriously. Honestly. How many here use a Laptop on their lap?
I've done it, but not for long, it's uncomfortable at the best of times.
I use a laptop at a desk or other flat surface.
EDIT : Just as a response to conjecture in some of the posts; this is not a reaction thread to the Surface Pro 3 or the lapability debate, nor is it a subtle dig at the assumption that people use/don't use laptops on their lap. I am genuinely curious and I do plan to do a tally of the answers (as best I'm able.)