Why do people block their door when they have absolutely no benefit of doing it?

I don't understand people who block their door when they have thousands of drinks out but empty or rotten mixers.
Its not like your waiting for any drinks to be made??

Don't you guys know that you profit while you SLEEP if you let them sell?
It has zero advantage unless your REALLY low on drinks and are waiting for a new batch. It takes a long time to recoup your spendings from buying the drink, so if you block the door your only making them sell slower and GREATLY decreasing your dollars per hour. To zero in fact.

Drinks running out is no excuse unless your level 15 and below. Because Diamante, GreenFairy, FrostBerry, and GoodVibes will last LONGER per batch than it takes to make them and they all make over 3.5 gold per drink proffit margins. Good vibes being the best at 4.1 per drink.. So they are virtually UNLIMITED

I get confused and almost delete people because I think they quit the game when they block the door and then they send me a gift. Its VERY CONFUSING, and there's NO POINT. you LOOSE PROFIT. why even do it? Its dumb???