I believe it is called ‘Pon Far’ on Vulcan.

Once I start scratching at age 10 I haven't stop.

I get it every 7 months. I think it’s affected by inflation. James

I do not see it as inherently true. It only exists in terms of a presumption that monogamy is the normal, correct way of being a bonding primate. If monogamy was not presumed as the standard, What frequency, duration and quantity of relationships might occur? Seven has been a popular "magic", preferred number for such crystallizations of folk wit for a very long time.

no not at all. I don't see how it can be generalised as 7 years.

Boy I sure have it. I'd been living in paradise..southern Thailand, for seven years and loved it here, when I suddenly missed my daughter and wanted to return to KY, although when I lived in KY, I thought it cold and bleak most of the year.

Not on my life.

Well, I was married in 2010, the subject of divorce was first broached in 2017 (seperated, but still have to file paperwork). Correlation does not equal causation, though.

I have noticed a cycle of about 7 years but it is in everything else, from work to play to hobbies, even to preferred foods. Its almost like my brain has a complete rewiring.

Nope, I was married for over 25 years. I had one long term relationship after that lasted 4ish years. I've moved 23 times in my life, and after a few years in a place I begin thinking of maybe it is time to move, then I take a nap and that feeling passes. So, no 7 year itch for me.