What you said is correct, sir, that our behavior and actions depend on the environment we live in. For example, here in the Philippines, due to the extreme heat, tourists wear comfortable clothes, while we Filipinos, even in the heat, still wear thick clothes and even drink hot coffee. Perhaps it's because that's what we're used to and accustomed to. So, I do believe that how we behave is really dependent on the environment where we grew up or live in.
When I first moved to the tropics, even in the winter I wore shorts. By the second year, I was wearing a jumper like everyone else. When I moved to the Nordics, the first year I barely felt the cold - I do now!