The old Yahoo.com,... it was google before but then I installed the google toolbar,... I might change it to circinfo.com
www.google.com Because Google has so many servers and so much bandwidth, it makes an ideal homepage. Not to mention it's arguably the best search engine there is. I also make Google the default homepage on people's systems when I first set them up, and usually they leave them that way for years.
It's fast to load, it's a very simple design, and it's where you start if you're looking for something. So you're right: it's ideal.