Because people like to remember the happy moments, not the sad ones. In a season where there hasn't been anything to be happy about, I'll welcome everything that will make me happy and make me forget the bad things, even if for a single night.
I think I will drink for 3 days non-stop if Manchester destroy Milan 4:0 or 5:0 or something. Something like that will make me forget all the disappointments Juve gave to me this season.