I thought the same until I got a widescreen Vaio laptop (I don't use the word notebook because they're much too big to be called that!) last week. Amazing how much more useful the wider screen is, for so many things. Spreadsheets are much easier, net viewing is much better, esp where people post photos that you would normally have to scroll across for and loads of other things including, as someone mentioned, having two windows open side by side. Widescreen DVDs look great as well, though I'd rather watch them on the telly anyway. The surprise has been how many games I own have a widescreen setting and how much better they are to use as well.
I'm typing this on my work laptop, which is a normal screen, and it feels very restrictive