Ok. This iBook G4 (still posting on it right now!) is not my main computer. That's a 2008 Mac mini. But this iBook G4 is my only working laptop. It even has 256 MB more RAM than the Mac mini!
OS X 10.5.8 is current enough for me. My Mac mini still runs 10.5.8. This laptop meets my needs, even though it is 8 years old. I have told people who were curious about it (wow your laptop is really thick!), and I said that I wouldn't recommend for them to buy an 8 years old laptop, however for me, I can because I know exactly what I need and I can maintain it too.