>>>I'm curious to know -- for people who seek residency in Japan, do they typically do it with the plan to stay forever?

I do. It's a "sweet spot" place to live. No threat of violence from law enforcement, significantly reduced threat of violence from the general population, extremely high standard of living, and the country is well-positioned as a base of operations for travel or business across most of Asia. Also, despite some high expenses compared to America, it's a great place to own a sports car if that is a major hobby (and it is for me). Many of the happiest people I know are Western expats in Japan who are small-business owners. It's important to disconnect from the "Japanese corporate wage slave" or "English teacher" life experiences. I'll never back to the US if I can avoid it.