Most commonly it is the "latest, biggest, fastest" obsession.
Now that the bike is 6 years old it's nowhere near the latest (Trophy), nor the biggest (K1600), nor the fastest (I mean unmodified, before the turbo/PCV brigade get snitty with me

).
I have never understood people who seem to change their bikes more often than their underwear.
I guess they have money to burn so I just hope it makes them happy.
I've ridden the K1600GT and have sat on the Trophy and neither of them are for me.
In fact, after 6 years I am just starting to get the C14 just how I like it.
Here's hoping it will be a long enjoyable relationship.