To say that all divorce is wrong is to tacitly expect all people to make infallible choices in marriage. Since no church preaches the perfection of humans in their present state that seems to be a contradiction. Cases of abuse, drug and alcohol addiction and other ills such as compulsive gambling and infidelity can put an innocent partner at serious risk. There needs to be a reasonable format for ending a marriage that has gone irremediably wrong.
For the record I have never been divorced, death did us part.