A group of my father's elderly friends liked to hang out and went to coffee shops and restaurant during pandemic. For almost a year, they didn't catch the virus. They laughed at my father, who on my insistence, stayed at home mostly for the past year. About a month ago, all of them caught the virus, except one who got vaccinated with sinovac earlier. Luckily for them, none of them die from the virus, but nobody is laughing anymore, and nobody hang out anymore, LOL.