The divorce rate is a new thing though, right? I'd bet that even if it was an arranged marriage, if you knew you weren't going to get divorced, you'd try to find ways to love your partner...
Everything I've read seems to suggest that incompatible personalities and finances are the main reasons people in our society split up - which would seem to debunk your theory.
Compare Psalm 90: "The days of our years are threescore years and ten"
Granted, most of the risk was due to midwives and doctors (especially doctors) not understanding or carrying out proper hygiene.