Michelle had come to me a while back complaining about her *gulp* Windows 98 machine. Both the operating system, and the machine itself, were very slow. But she didn't see why she had to buy a whole new machine, and/or upgrade Windows just to use the computer for what she used it for.
Michelle used the computer for surfing the internet, playing simple games like solitaire and instant messaging.
I suggested that, rather than spending $500+ on a new virus box, she let me install Ubuntu Linux instead.