Greetings friend, I can see why you would love to migrate to Bangladesh because of it less cost of living, which as a retiree you don't want a high income country. And I can also see your reason for wanting to move to Napal because you are a big fan of Himalayas and Napal is a tourism country. And that would make their economy to thrive because a lot of tourists would be gracing their country in numbers. I wish you the best