OK. Enough is enough.
When Bitdefender decides it wants to update, it pops up a reminder in the lower right corner of the screen. If you click "Remind Me Later" then it will do so... about 15 minutes later. There's no ability to select "Remind me in an hour" or "Remind me in one day". So it just nags you over and over while you're trying to work.
That's annoying. Really annoying.
But it gets worse. Just now, I was using my space bar to scroll down a long page on a website. Suddenly, my computer started rebooting itself without my permission. Then I realized, in anger and disgust, that Bitdefender had hijacked my space bar click into a click on its "Reboot Now" button. Its reminder popped up literally as I was clicking the space bar and immediately sent my computer into reboot.
That is completely unacceptable.
I absolutely 100% will not be continuing to use Bitdefender after my current subscription ends.
Note: Edited because apparently saying "What the h***" would hurt someone, somehow.