Single-click or double-click?

Without naming my wonderful wife, I know people who are often confused about when to double-click. Particularly, they double-click stuff that only has to be single-clicked (like web links). But in today's web-powered world, is double-clicking an anachronism, a vestige of old-school computing? Why don't we ditch it altogether? After all, desktop folders and program icons are really the only items that need two clicks. As it happens, Windows offers a single-click solution. This tip turns both XP and Vista into a single-click OS:
1. using any open folder, go to the "Folder Options" menu item at the top.
2. In the General tab, find the 'Click items as follows' section, then enable 'Single-click to open an item (point to select)'.
3. Decide which of the two "underline" options you want. The first keeps all clickable items underlined at all times, much like links in your Web browser. The second keeps the underline hidden until you mouse over an item. (I prefer the latter.)
4. Click OK and you're done.
This method also makes file selection a little trickier, especially if you're accustomed to the practice of Ctrl-clicking multiple files. Now, instead of clicking each file in turn, you just hold down the Ctrl key and mouse over each file you want to select, pausing for about a second on each one until it becomes highlighted.