Muslims, do you want Islamic (Sharia) Law, or was Mohammad wrong about that?

Robert Spencer, in this article, claims that "51% of U.S. Muslims want Sharia". http://www.jihadwatch.org/2015/10/5...young-muslims-more-loyal-to-islam-than-to-u-s
So a good question to ask your Muslim friends, to get to the truth of whether they want Sharia or not, would be "do you want Islamic (Sharia) Law, or was Mohammad wrong about that?"

Question: what do you think most Muslims would answer?

Me, I have a hard time thinking that they would admit that Mohammad got anything wrong, so of course they have to say they want Islamic (Sharia) Law - or did Allah/Mohammad get it wrong (in which case why be a Muslim.) I care for Muslims either way, but I think that most people don't understand that most Muslims do want Islamic (Sharia) Law, with all it's barbaric practices like torture and cutting off of hand and feet.

What about you?