I'm certainly not "forcing my insight" on anyone, just giving my opinion about the exact same situation I was in a bit ago. When I say practical, I mean compared to modern machines in areas such as power usage, noise, heat, software compatibility, and parts availability.
The G5 cruises some websites okay, but newer sites with video and such crippled my set up. If you are just looking for an Internet/email/word processing machine, then it will suffice.
I like the G5, which is why I was trying to keep its spirit alive by spending a lot of time modifying the case for years and years of additional use