I can't speak for anyone else, but I have a large number of users, who all come to work in the morning, boot their computer, use traditional desktop apps all day, and shut-down the computer at the end of the day. Some of them truly are as dumb as a box of rocks.

I honestly don't need the aggro and grief of dealing with all the 'who moved my cheese' shock and the inevitable 'I can't do my job' complaints that will follow.

The last thing I need is to be dragged into a meeting to explain why everyone says I f*ed their computer.