Sure, I’ve been happy with my CI. I also know of some users that’s had their CI’s for 20 or almost 30 years, etc.
Most of the troubles I had with my CI are just little external ones like having to replace the coil or needing a new microphone protector and so forth. Kinda like the ones one would also have with an HA.
I’ve also upgraded once thus far. First getting the Freedom in May 2008 and then upgrading to the Nucleus 6 in January 2015. Whereas the Nucleus 6’s processor is smaller and also has some extra features like the remote which I use often and that some of the older models didn’t have.