When you open a file in Excel that someone has sent you through Outlook, hitting “save” doesn’t actually do anything unless you’ve first saved a copy locally using the Save As function. It doesn’t warn you that it’s not doing anything, either; it just assumes that button is there because it’s pretty and that you’re hitting it because you’re bored.
An hour of formatting and data collection, saved THREE TIMES during the process, lost, with no temp file to go back to. Fucking idiotic way to design software.
Okay, the habit my wife and I share of taking forever to get shit done because we like to make sure we know exactly what we’re doing before we get into stuff 
got an invitation to
…which, hell, probably won’t even take that long, you won’t be able to unsee it.