First Anne-Marie had a hit with "2002"; then Charli XCX and Troye Sivan scored one with "1999". Maybe it's a toxic conflation of political confusion, property ladder angst and whatever a certain controversial world leader has been up to on any given week, but pining for simpler times seems to be in fashion. Now a viral Twitter thread has captured this nostalgic mood perfectly by asking users: "What did you have in 1998 that you no longer have in 2018?"