How important is the search for the haplogroup, family tree , and taxonomy in European mentality ?
Way too important. I reckon its subconscious racism; and thus based on pseudoscience.
All humanity is related after 1500 years anyway. This is easy to prove with simple math.
After 25 years we have 2 ancestors (parents).
After 50 its 4, and 100 its 16.
250 years = 1024 ancestors.
500 = 1 million
750 = 1 billion (1000 000 000)
1500 = 1 billion billions
which is so many more people than were alive at that time.
So the real number is likely far less than 1500 years.
The biggest divide is the atlantic ocean, but if you examine the development
of the bow and arrow, its clear that this technology has been transferred
across the atlantic ocean somehow many times before Columbus.
Europeans need to stop being racist; that is the subconscious issue here.