Bad advice. Some of the absolute worst CFI's I've had were just there to put time in their own logbooks. Everything I learned from them can fit in the palm of my hand.

Now I wasn't sure I'd have the patience to do it, but as it turned out I did. Many of my friends don't have the patience and they absolutely HATE instructing.

Bottom line, if you don't like being a teacher, instructing is NOT for you.