Apart from the fact a G3 iBook can do exactly what the OP requires it for - Powerpoint, movies and iTunes.
Not really. Trust me, I've tried. Basically, you can only do things that made sense in say 2004. PowerPoint? Not any file with any sort of multimedia. In fact, one of the reasons I upgraded from it (way back in 2002 actually) in the first place was because PowerPoint and other applications were deathly slow on it.
Movies? 480p MPEG4 maybe but not anything with h.264... which is basically everything these days.
iTunes? Not any recently purchased content, and don't expect to sync your devices with it, unless you just have a 10 year old iPod or something.
For the record, I currently have five PowerPC Macs in my possession, and all are fully functional, so I have a lot experience with them.
It all depends on what your reasoning is to look at older hardware.
If a savvy Mac user wants just bang for buck, an early Intel MacBook is likely to be the best value for money.
But, if you appreciate a G3 for what it is; a fully functioning Mac pushing nearly 20 years old, it is an amazing feat of technology.
Even just being able to slowly browse the modern web using TFF or TenFourKit, play movies and listen to music is spectacular for a machine which was built with a lifespan of no more than 5 years.
I just don’t think many people would be satisfied with a G3 iBook as their ONLY computer. Unless they don’t intend to do much online. For example, a writer may find a standalone G3 iBook or PowerBook perfect for focused, distraction-free writing.
Indeed. It can be fun to play with a G3 iBook. But just don't expect to do anything useful with it, unless you have a very specific piece of legacy software you need to run (like OS 9 equipment control software or something).
IMO the minimum Mac one should consider for actual work or even just modern internet access or stuff like that is a Core 2 Duo with El Capitan support. And BTW, in addition to my PowerPC Macs, I have two Intel Macs that cannot run El Capitan. They are not quite as useless as the PowerPC Macs, but are quickly becoming much less useful than before. I just replaced my
2.4 GHz Core 2 Duo MacBook4,1 with 10.7.5 Lion with a
2.0 Core 2 Duo MacBook5,1 Unibody Aluminum because 10.7.5 is obsolete. Surfing has become problematic due to site incompatibilities, as all the current versions of the main modern browsers won't run on it. Heck, even the latest version of iTunes won't even run on it, which means my iPhone can't sync with it.
Considering I only paid CAD$180 / US$150 / 125€ for my MacBook5,1, I can't for the life of me imagine why anyone would want to subject themselves to the pain of trying to use a G3 iBook in 2017, or paying 30€ for it, unless it was only for a very specific piece of legacy software, or for a trip down memory lane.