In this WASP society that we live in I would never change my name because there is no reason to.
Now, if my name was Lipshitz, like a local car dealer, I would change it.

Many movie stars did it>
Robert Taylor...Spangler Arlington Baugh
John Wayne......Marion Morrison
Tony Curtis.....Bernie Schwartz

I see nothing phony about it.but, if Tony Curtis went around telling everyone that he was John Wayne, that would be phony.