Well, good in the meaning of "you need it to use a certain service". For example play radio streams using RealPlayer. Most popular radio stations in Germany don't offer mp3 streams, so AmiNetRadio is of no help here. There are more examples. However, I use WinUAE for most of my needings.
Well, good for you. Some people prefer to be completely without Windows though. I must admit that I am flabbergasted (and I'm not picking on you in particular here) that so many "intel outside" / other anti-MS people use ... tadaaaa Windows.
It's not like I can do *everything* I need to do on my Amiga. Only about 99%. Unfortunately there is also no laptop Amiga, so therefore I have my trusty powerbook, which happens to do the last 1% (like home banking and realmedia).
Even then I'd install AmigaOS on the laptop in a heartbeat if I could (running natively of course) and just ignore the few things I couldn't do.
I guess I just have a hard time respecting Windows as an educated choice unless you are locked into the platform by profession - and I mean *locked*.
Sorry. I'll stop ranting and go away now.