For your workflow, maybe. Others differ. My primary PC usually has connections open to six different machines, a text editor with fifty or so files in it, 20 tabs in a web browser, all kinds of other state which will be lost if I shut it down. (Right now it doesn't, as it crashed the other day after I tried changing the power saving settings :-( ). Resuming all of that lot at the start of a working day is tedious and I'd much rather that it could go to sleep and wake up where I left off