"Oh look, it's getting low, I should charge it soon."
....
"Oh whoops, it's dead, I should charge it now."
Okay, to be fair that's not all the time, but I do tend to wait until a device gets rather low and/or dead before I actually plug it in. Though if I know that I'm going to be away and there's a certain thing I want to use, then I'll probably charge it up the night before regardless of battery left just so I can go the longest time I can while away without being hassled to plug it in.