When, if ever, is “number of lines of code” a useful metric?

Question

Some people claim that code\'s worst enemy is its size, and I tend to agree. Yet every day you keep hearing things like

• I write blah lines of code in a day.

Answer 1

Reminds me of this:

The present letter is a very long one, simply because I had no leisure to make it shorter.
--Blaise Pascal.