Actually it's more like the status quo, bro.

And have you ever given any critical thought as to why it is that way?

As to why this push for immigration and migrant refugee importation is only so prevalent and widespread in Europe and nowhere else to such a massive degree? Europe was just fine without them for hundreds of years of her history. And all of a sudden in just a few short decades it is forced to undergo this massive and unprecedented demographical shift.

Even the most conservatist parties are pro immigration

Even the most liberal parties in the 1950's were against third world immigration. Even the United States prioritized Western and Central European immigration above all others until the passage of the Immigration and Nationality Act of 1965.

These "status quo" views you speak of have only come about recently in world history. Widespread third world immigration into Western Europe is only about four and a half decades old, 45 odd years or so, and the consequences and negative effects of this new status quo against European economies, citizenry and quality of life have become readily apparent in that short time.