Handbags   (The sad, the bad and the ugly. Non-productive stuff here.)

broady...it's a personal choice...I explain to my USA friends that they have an allegiance to their country and I have an allegiance to mine.
There's only two things I cannot do in the USA ... Vote, that's ok because I can't see anyone I would want to vote for !
There other one is work on military equipment, been there done that, no big deal.
Now...are there any advantages you might ask...I can go straight through customs in the green channel when visiting the U.K. , have to wait for Mrs britboy to clear.
Coming back into the USA again I pass through very easily with uk passport and green card.

Sooooo no problem or a need to change.