Jobs and Divorce

On the list of jobs with the highest divorce rates, physicians and surgeons clock in at 7th from the top. Optometrists rank #505, or 6th from the bottom. Explain.

POSTSCRIPT: Bloggers don't make the list, but "writers and authors" come in at #213. So I guess I'm pretty safe. Certainly much better than the #34 I used to be as a technical writer, but about the same as back when I was a retail manager (#276) or a marketing manager (#204).