Definitely not daily, but when I make some profit, from time to time, yes, I withdraw part of my funds. It's safer that way cause you know, exchanges fall.
If you're earning small amounts evreryday then it would be logical to accumulate first all your earnings for a week before withdrawing. This is to avoid big withdrawal fees to slowly gnaw at your earnings. At the end of the month you will see the difference of withdrawing daily against withdrawing with every once in a while