Had mine for 16 years, so you've got some catching up to do Rhys.
When I start feeling like that, I just leave it in the garage and don't touch it......a couple of months later you'll find your missing something in life and it starts all over again....Don't think of it as an investment, coz it aint, just forget you've got it and leave it for a while. You'll soon go back to it though.
Mines outlasted two wives and numerous girlfriends....... And a damned site more reliable....
And at times more fun....