On the other hand, it no longer serves any practical purpose whatsoever.

In a way this would be a positive. Or there's a bright side. We can, as a society, all agree to do something completely pointless and stupid. Would be cool if we funnelled that energy towards something sillier. What if we all agreed that a certain tuesday just didn't exist or something? I dunno, could be wacky, could be nice. Instead we have DST.