So let's see, either I compact the messages to free up disc space I don't actually need to free up, or Outlook is going to punish me every time I log in until I do.
I already compact my deleted items folder, as a result of persistent messages telling me I could compact my deleted items folder. These would pop up while I was playing games, forcing the screen to minimise just so I could tell Outlook to eat fiery death. Eventually, one of the commands I typed into a game was picked up by Outlook and interpreted as meaning, "yes"; as a result, every time I access my deleted items folder (for example, to delete half of it permanently) I'm looking at a 20-second delay while it decompacts it.
So no, Outlook, I don't want you to do this to my folders. I don't even want you to ask to do it. I particularly don't want my computer's boot ing up process to sit around on hold waiting for me to tell you I don't want you to do it.
Why isn't there a "no, forever" button in that box?