Yes. I, too, was surprised by the number of couples who split up after 15+ years.
I think the answers vary widely by age as much as area.
When dh and I married in our late 20s the only peer who was divorced was my sil. She had married her high school sweetheart just after graduation and it didn't last.
Several years ago it seems we went through a divorce epidemic. 4 of dh's siblings (all of the married ones) divorced after a few (it was sil's 3rd marriage at that time), 13, 15, and 18 years.
Some of our best couple friends divorced. 15, 18, 26 years.
More recently, several of my cousins have divorced. I'm not sure of the time frame, but all had graduated at least their oldest dc from high school. Maybe 20 years of marriage? At least 2 of these were dealing with a youngest child on the autism spectrum. Dh and I certainly have scars from that particular stress . . .
And I just learned last week that another childhood friend is separated. Their two older dc (out of 3) are in college, and my friend had been putting up with her dh's neglect of them all for years. I don't know if she finally got tired of it, but I can't imagine trying to please someone who said, "I don't know if I ever really loved you."
:iagree::iagree::iagree:
My sil? Everyone in her family is divorced. Some multiple times. She says all the women in her family "lost it" in their late thirties/early forties. I wonder if it might be hormonal or if their dc growing up and not needing the "mother role" prompted the split-ups. I know my sil puts up with way more than I would think humanly possible because she is determined to have a surviving marriage.
It is sobering. The stresses of life can beat you (and a marriage) down. Don't take anything for granted!