The girl got knocked down by the other girl at the bar who didn't apologize for it afterwards. She thought it was insensitive and mean for someone to knock her down and not apologize for it after life had just got done knocking her down.
A pointless concept that always leads to death and pain. To live life is to commit long suicide with inevitablesuffering before death, with little dots of joy and happiness coming through the dark veil of despair.