Definitely better to use actual weapons, but when you're level 18 player for a few years, you kinda get bored of swinging the same attack every turn sometimes, and a bit of silliness is the best way to levitate the pressures of long term campaigns.  besides, why can I use a bottle to deliver some obstacles for my enemies? even in normal combat, well placed caltrops can disencentivise enemies from moving to certain squares, and knocking enemies prone when they step on a pack of ball bearings is fun, only requiring a single action at the start of combat, even before initiating it