Thinking about it now, it seems a little bigger than I realised when I wrote it.

I too moved to another country and got a bank account. When the people at the bank asked what I needed, I said something like "well, I'm here to stay and will need all the things regular people have, an account, a card, probably a house loan someday, can you advise me about what I should get today?". Maybe I hadn't yet decided that I wanted to stay for decades when I said that, but the person behind approved of the answer, I could tell.

Saying something vaguely like "I'll do the minimum necessary here and whatever possible in my old country" simply isn't a great way to talk to the people at the bank, at the immigration authority, at the waterworks, all the people who can make your move simple or less so.