Countries should not have open borders due to the better living conditions of some compared to others. Take the US, for example. From October 2018 to July 2025, 4.5 million immigrants came into the US, according to the federal records.. This destroyed the economy. House prices went up 41.5% since 2018, according to the FHFA. Jobs became harder to find. If stuff like this happens when we have less strict borders, imagine the amount if us and other countries with good living conditions opened them. It would cause such an influx that the economy might not be able to recover from.