Do you believe in the butterfly effect? There's 2 ways this could of gone;
1. On the 26th you made a post saying you were deactivating your account you made a little speech and left, people would of felt sad, happy, guilty, relieved, you name it.
2. You say your leaving 20 days from now in which time everyone loses just a bit more respect for you and sees you as an attention seeking person they have to put up with for 20 more days.