Every night I roll it up. If we leave the campsite I roll it up. I have been there before running out in the middle of the night to roll it up from a storm or have seen them torn off from campers who left them open and went into town. Sometimes they were still staked down but the fabric ripped.
This just happened to us last year - beautiful day, no chance of rain and then one rolled in with high winds, tore them off my 2 neighbors rigs. In the old days I would have gone out and rolled them up for them but with the new electric ones I dont have that opportunity so can only watch.
I dont leave anything out at night either so I dont need to worry about anything getting wet. Gives me piece of mind while sleeping or away from the campsite. I go camping to relax and try to limit the amount of things I need to worry about while camping to a minimum. Takes all of 10 seconds to press the button to extend or retract it and I take full advantage of it.