I used to love live performances and the cinema but don't bother any longer.
From childhood we were raised to be still and quiet during any sort of performance, including film. Even sipping a soft drink was to be done stealthily and quietly. And of course at live performances, best behaviour was expected.
Now no matter where one goes it's loud, obnoxious clods who have to be talking, fidgeting, eating, drinking, arriving late, leaving their seats multiple times, etc, totally oblivious to the focus and concentration necessary for the actors/performers, let alone considerate of fellow attendees. Not to mention the slovenly attire.
People behave as though they are in their own homes. And those of us who demand decorum and etiquette are looked upon as old-fashioned and unrealistic. It's so depressing.