For your own sanity you should stop being worried about the longevity itself and just enjoy it until you stop using it, you sell it or it dies and can't be repaired.
I've read about dying psus, displays, heck, mine was with the good people of G66 service guys and gals a few days ago and they replaced the USB port and USB chip and it's on its way to me.
The main advantage here, when you are dealing with Fractal Audio people is the beyond-any-words support, and yes, even 9 years after you bought your gear (mine has been with me since Nov. 2011). If you run into trouble, and if it's fixable they WILL fix it (or help you fix it).
So, trust me, I know how you feel, especially if it's the very center of your sound (and in my case, it is the last 9 years, no amps, no pedals, no nothing), but just enjoy it.