It's an interesting thought.. Though I don't think that this is the best explanation. "Наша страна" and similar expressions have more to do with traditions and language than some kind of deliberate training.Originally Posted by sperk
There's one more "мы" vs. "я" example in Russian, you must have been seen: "Мы с Петей пошли в кино" (Petya and I went to the cinema). "Я и Петя пошли в кино" is also possible, but "мы" sounds more natural. Again, it's not the result of some training or forcing people to use "мы" instead of "я". It's a part of culture, Russians have been talking this way for centuries, they got used to this, so "мы" does sound better style-wise in this case.