I've seen presumptions that is because marriage has been declining. People who were marginally less into marriage for whatever reason seem to be forgoing the "I

I've seen presumptions that is because marriage has been declining. People who were marginally less into marriage for whatever reason seem to be forgoing the "I guess we need to get married ... <1 to 7 yrs, maybe kids> ... I never was into this, why did we get married? Lets divorce" pattern.