I almost never charge my N900. I charge batteries on my separate charger. I reboot only when I swap batteries. If there was a capacitor so I didn't have to reboot then (it's been suggested before but the suggestion was ignored) I wouldn't reboot at all.

By the way, it seems to me if so many people think they benefit from rebooting, couldn't someone write an app that refreshes some processes or something so rebooting wasn't necessary?