in reply to The most useless key on my keyboard is:

what about Insert? not only is it useless, it's dangerously close to delete and home, so I'm ALWAYS accidentally hitting it.

to make matters worse, i tend to type sometimes without looking up at the screen, so I'll be typing 3 paragraphs before i look up and find half my document gone! curse the Insert key!

Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life.
- Terry Pratchett