I've been checking out some of the characteristics of languages in general, and have come to an early conclusion that languages have different traits that determine in one way or another the behavior of the people that speak them. I have experienced this, myself, feeling different when I speak English than when I speak Spanish.
This might be related to the roots of some languages, and to show some examples about this, we can talk about how most English-speaking countries have a tendency of being at higher financial, technological, and industrial levels than others; or the fact that we perceive the Japanese as such disciplined, intellectually-advanced, and determined individuals. We can also perceive the French as sophisticated and classy; on the other side, the Brazilian are characterized for their happiness and joy; and like it or not, many Spanish-speaking countries, are marked by violence, poverty, and are considered underdeveloped nations. All this, we can see portrayed in every respective language.
This could be due to the culture that every nation was founded on, and culture is what defines a human being's identity. Could learning a new language influence our culture, even to the extent of changing our habits, behaviors and the world around us? How important is it to be bilingual in our continuously changing environments?
These are some of many questions I've made myself about the importance of learning another language, seeing that they open a whole variety of doors and opportunities in society.