Stating that women and men would get extinct is dramatic. Social media usually is too. I'm also dramatic when I write fiction. XD

Having said that, you prove my point about not getting extinc just because divorce or lower marriage rate. Life goes on.

Some women would agree with you, others don't. Marriage is a social construct. If you read history or antropology, you would see that there are different family structures in time and place.

You talk about a specific type of marriage and is OK if you want that. But many women who have experience that (not just modern women, but also grandmas raises very traditional) would tell a different story. For example, plenty of grandmas and mothers (not modern) would tell their daughters that they should "study hard to have the opportunities that they would never had." Think about it, they have lived the live you advocate, the one of sacrifice and desire something better for their daughters and grand daughters. And that has nothing to do with dated our outdated, but with practicality.

There is a reason they tell their daughters to study, have careers and their own money: because that brings opportunities for the whole family. Including the husband. But the counterpart is that domestic chores shuld be shared or it would be unfair.

Now I ask you: If it is about being considerate to the other person and making sacrifice when someone else needs help, how come men aren't asked for the same? Why they don't sacrifice and work in and outside the home? Why women are asked to take care of the home even after surgeries or while being ill, retired and old, while men can expect that women step up when they have a bad time? So this is the thing, modern women are asking for reciprocity and the same level of consideration and sacrifice from their partners. The ones that leave their partners aren't leaving them just because they become unemployed, but because they aren't putting the work into looking for another work or doing their part in the house or with children and elders.

Consideration and sacrifice is wasted on people who won't appreciate it and won't reciprocicate.