I don’t see for example why I should gush about Germany at every turn or try to prove that someone is objectively wrong if they find Germany unliveable for themselves. At the same time, I don’t understand why someone would find it sensible to tell me “leave if you don’t like it” when I express a criticism.
That is because you are confident in your decision. So you don't need outside approval and don't feel threatened by outside criticism.
For me personally, my parent moved here when I was younger from Russia - so I hit the jackpot, because otherwise there is a good chance I would be dead or in prison.