I don't mind removing my computer from its case at all. The thing that irks me is having to listen to everyone run around asking people to do this in line before getting to a table that makes it practical.

More than once I've told TSA agents that I will remove my computer but when I get to the table at head of the line. You'd think that they would be able to sense the unrealistic nature of their request just by looking: with two hands we are supposed to hold our ticket and our wallets open at our ID, hold and pull our carry-on bags, and open and retrieve laptops from our carrying cases (without dropping expensive laptops) and place the laptop into a non-existent third hand?

Maybe some people can do this more easily, but I refuse to drop my laptop while playing Twister for no apparent reason.