My Marlin is 37 years old and is still working perfectly.
I've got a 10/22 the same way, only around 2 years younger. IMO, the Marlin's only problem is lack of aftermarket parts sources. You can build a 10/22 from parts without using a single Ruger-manufactured component. The Colt 1911 is the same way - lots of repair parts available form lots of different sources. That's a big plus.