It's just another childish attempt to get some attention. It's weird. If you're going to leave then just do it.Or maybe because they genuinely give a shit about some of the posters here and want to say goodbye to a community they've been at for a long time. Not that I expect someone like you to understand a concept like that.
Think back to those people who say they're leaving the country because their candidate didn't win, but they never did. Same thing.