Diversity is the way of the future, and homogenizing the way that countries identify ethnically is an old form of bigotry that needs to stop. The larger and broader the demographics in Europe and, indeed, the world get, the more likely it is to achieve racial harmony between different people.
The term "diversity" has a variety of meanings, and some kinds are better than other. The mantra of diversity is not a virtue in and of itself, but a diversity of ideals, perspectives, and opinions. A diversity of trades, crafts, innovation and ideas are a benefit to any nation. Europe can only become greater if it encourages diversity of thought.
The demographics of Europe should become more diverse because diversity is a good thing and helps us to relate to other cultures and understand them. It creates a more peaceful place to live and world to be apart of when we are able to except everyone even from different races, religions, and gender.
Europe has always had a proud history, with very little. Immigration to speak of. Europe already is diverse as a continent, from russia to sweden, to germany to france, all the cultures differ alot and all sum up to european culture. I assume the question seeks to ask if europe needs more culture outside of europe. The answer is no, we dont need nor should we want them. Most other cultures colide with our. Keep europe european. Same as china can stay chinese, and saudi arabia isnt forced to adhere to other cultures, europe shoundlt either.
Diversity as in 'ethnic diversity' has added nothing positive to Europe and multiculturalism has been discredited as a practical ideology by the decade long study study undertaken by Harvard professor Robert Putnam. With the voluminous social problems associated with multiculturalism, It has since been denounced by both Angela Merkel and David Cameron(Leaders of Germany and the UK respectively)
Europe isn't the dumping ground for the world's strays, it is a continent with a myriad of established cultures, customs and peoples. I see no tangible benefit to the people of Europe in allowing a debunked ideology and failed social experiment to further continue.
There is no reason the demographics of Europe should become more diverse. Unlike the United States, which since its origins has called for immigrants from all over the world, European countries are homes to specific cultures of poeple. Those cultures should remain as they are. Forcing diversity just doesn't make sense there. No one calls for diversity in Africa, so what is the big deal here?
I think that distinct ethnic groups are being destroyed by inter-racial marriage. A lot of this is caused by immigration of non-Europeans to the area. Diversity is good until one group starts to overtake the original group. In earlier centuries, they did it by waging war and literally taking over a country, such as the Anglo-Saxons did with England. Now they do it by flooding the countries with immigrants.