Why Thor & The Asgardians Abandoned Earth For 1000 Years In the MCU

There’s a major gap of time between when Asgard first gave aid to Earth in the MCU and when Thor became an Avenger. As protectors of the Nine Realms seeking to maintain the peace across worlds first established by the All-Father Odin, one would think that Asgard would have played more of a role in the affairs of Earth aka Midgard. However, it seems as though the general policy when it comes to Asgard’s involvement with the other Realms is a little more complicated.