A divorce may be granted for any of the following grounds:

1. (1) failure to consummate the marriage at the time of the marriage and continuing at the commencement of the action;
2. (2) adultery;
3. (3) conviction of a felony;
4. (4) wilful desertion for a period of one year;

5. (5) either

   1. (A) cruel and inhuman treatment calculated to impair health or endanger life;
   2. (B) personal indignities rendering life burdensome; or
   3. (C) incompatibility of temperament;
6. (6) habitual gross drunkenness contracted since marriage and continuing for one year prior to the commencement of the action;
7. (7) [Repealed, § 68 ch 127 SLA 1974.]
8. (8) incurable mental illness when the spouse has been confined to an institution for a period of at least 18 months immediately preceding the commencement of the action; the status as to the support and maintenance of the mentally ill person is not altered in any way by the granting of the divorce;
9. (9) addiction of either party, subsequent to the marriage, to the habitual use of opium, morphine, cocaine, or a similar drug.