There are many, many names, especially the classics, I prefer in full form.
Alexander,
Nicholas,
James,
David,
Kathryn,
Andrew,
Anthony,
Daniel, Samuel...the list goes on and on. Actually, my favorite name is
Edmund but since I loathe
Ed, I could never use it. Not as a first name anyway.
Maybe the nn's are overused and it's so rare to hear someone use their full name when a shorten version is common. I do like nn's but not for all names.