Poles should stick with Poles and keep our heritage and culture strong.
All the evidence suggests that's precisely the way to make a culture degenerate.
And keep it pure
Suspect to say the least.
I don't want to see in 10 years that my country and it's people have changed and mixed with rest of world.
So you want Ciemnogrod.
Other culture marry their own
Really? Millions would disagree.
why should Poles compromise their values for other culture/religions/races of people when other people are not willing to do the same for Poles
Why shouldn't they? And why do you think that:
other people are not willing to do the same for Poles
It seems you have a very negative view of Poland.