I think the majority of all computer user’s at home (probably at work as well) are doing nothing more then web browsing, email and some picture editing whether they are on Mac’s or Windows boxes. I don’t have any statistics on that. Just observation.
There are an enormous amount of features in both OS’s that never get touched from what I see. That’s why I like the direction of Google Chrome OS for home use. Obviously it’s no where close to being mainstream…but it makes sense to me.
On that note whether it’s a Mac or Windows box most people spend entirely too much money in my opinion. If money is not an issue I like the Mac’s mostly for design and build quality. But I think the most basic of Dell’s is more then enough for most people who don’t have excess money to toss around(those 3-500 dollar specials).