"It is unfair to judge Harrison Ford on the breakup of his marriage"
You're right. He's just following in the footsteps of many other actors who, once they reach middle age and millions of $$, trade in their families for a trophy wife (in Heretic's case, an emaciated one). Hell, sometimes it backfires and the "old lady" shoots 'em first.
Nevermind that the former wife worked 3 jobs while dumb-nuts went to acting school. Cest la vie.
His former wife also wrote the scrennplays of 'The Black Stallion' and E.T.