That he had Yoda's endorsement was almost worse. He didn't live on Dagobah to hide from the empire so much as to be somewhere none of the surviving Jedi could roast him online for his failures

That and it was an all you can eat buffet for his species

Basically the exact same reason Luke ran off to Puffin Rock. "Pray, tell us again what happened after you killed the emperor!" "I don't want to talk about it"