Mirror,
If you were to come to my house and start making statements of my mom’s attitude being ridiculous, I would not then insult your mother. It would make no sense to do so. I would think you were uniformed but I have no idea, how me insulting your mother would make the situation any better or make me feel like a better person.
Where did you spend time in the USA? As you surely know, the United States is a massive country, larger than Western Europe. As such, it is impossible to make sweeping generalizations about the entire country, such as 'you americans, are like a tree with no roots and your country is aswell'. California is vastly different from Louisiana. Florida is very different from Michigan.  
Plus, your quote above doesn't make sense to me. Could you please expand on it? How are americans rootless? What do you mean?
Also, being a chauvinist and xenophobe is nothing to be proud of. It's pathetic to think that that is a strength.