I don't do that unless I'm avoiding someone to disturb me lol. But it actually turns off at least 2-3x a week whenever the batt is drained and I forgot to charge it immediately.
Before i've got used to turn it off during the night, but i haven't done this in the recent years. I have only restarted it when needed (although this has happened only a few times so far). So, no, i don't turn it off.