I bought that same G4 Titanium notebook (used) myself in the past week.
I had the G4 desktop previously and it did everything I wanted to do reliably. With the PCs, it seems like something new always comes up to change one’s computing environment — and the hardware breaks down. As a writer, my keyboard would break down, the computer would get infected, etc., etc., etc.
Just being impervious to the viruses alone is the greatest recommendation for the Apple. I don’t want to have to deal with those hassles anymore. I want a simple machine that does everything the same way reliably. That’s all I ask.
Let those other guys send a man to the moon.
BTW & FWIW, I often tell folks. "When I want to work on the computer I use the Windoze machine; when I want the computer to work for me, I choose the Mac."