I'm not a huge PVP player, but I enjoy it from time to time, and don't really care either way.
I can understand the appeal of nameplates for reputation, and rivalries etc...
On the other side, nameplates make it easy to know who the sheeps and wolves are...allowing the wolves to target sheeps and avoid the other wolves.
For all the people that do enjoy a challenge, my personal experience has always been that people will seek out easy targets...nameplates make that easy to do.
Not saying one is better than the other, but there are valid arguments for both sides.