Why can't we learn the good things from each other's culture here?

A guy who I have never interacted with asked me some outdated questions on my country based on his limited knowledge, preconceived notions, stereotypes, prejudices and false media propoganda.

I had a lot of points in mind to counter it by highlighting issues prevalent in his country. His questions were unwarranted, intrusive and he didn't seem to be in his right mind. Indulging him wasn't a good idea.

He was asking me a lot of personal questions authoritatively and started by saying, "Now that I have your attention..."

And attention is something i didn't give him.

My question is why are people so interested in finding issues in others or their country? Why not look inside , introspect, accept the things going wrong in our country and focus on doing something about it?

My question is why can't we learn the good things about each other's country? Why can't we imbibe the good and be better human beings?

I am more than open to learn about other cultures but i am not a Saint if someone has the audacity to disrespect my country and expect me to do nothing about it.

This place i thought was suppose to be a platform to exchange ideas, thoughts, culture and values.

What is this place really about?