Converting to JAR becuase I own a couple of G-Reg aircraft. All of the twins that I fly are G-reg and I am fed up of being excluded from Class A when IFR.
It really gets my goat having to fly down the side of the N866 airway when going on my frequent trips to the channel islands just because the aircraft reg is wrong!
There are a whole multitude or reasons for changing but in a nutshell the FAA while brilliant, more logical to achieve etc is not much use unless you own or have EASY access to a well equipped aircraft on the N-reg.
I have access to an N-reg aircraft but it is a long way from home and so when needed for trips has to be collected and staged ready for the trip which loses some of the spontanuity of a last minute trip.
I have looked to buy an N-reg but did not find anything that I liked at the right price!
A lot of people do the FAA IR for a number of reasons:
A) the experiance,
B) to tell other people they have an IR
C) to get an IMC rating on the back of it.
D) they percieve it is easier than the JAR (depends on your view)
But it does have a limitations.
There are no doubt a few more