I disagree.
I know many people who are not afraid of practising, but they just don't like card manipulation.
Woops, I re-read my post, I didn't notice my exaggeration. I agree with that one^
However, I know a bunch of people who claim that it is physically impossible for them to do manipulations even if they'd love to do it. Just as an irrelevant note, McBride talks about different kinds of excuses people have when it comes to reasons for not learning card manipulation. (Small hands, not enough time etc.)
RichmanMatthew, you are the first person ever who I've heared to say that stage productions are the easiest type of manipulation around. I've worked on manipulations for some time now and disagree completely. So, could you please tell me what kinds of manipulation you think are harder? Balls? Silks?