What are the grounds for divorce in Maryland?

(1) Adultery;

(2) Desertion, if:

(i) the desertion has continued for 12 months without interruption before the filing of the application for divorce;
(ii) the desertion is deliberate and final; and
(iii) there is no reasonable expectation of reconciliation;

(3) Voluntary separation, if:

(i) the parties voluntarily have lived separate and apart without cohabitation for 12 months without interruption before the filing of the application for divorce; and
(ii) there is no reasonable expectation of reconciliation;

(4) Conviction of a felony or misdemeanor in any state or in any court of the United States if before the filing of the application for divorce the defendant has:

(i) been sentenced to serve at least 3 years or an indeterminate sentence in a penal institution; and
(ii) served 12 months of the sentence;

(5) 2-year separation, when the parties have lived separate and apart without cohabitation for 2 years without interruption before the filing of the application for divorce;

(6) Insanity if:

(i) the insane spouse has been confined in a mental institution, hospital, or other similar institution for at least 3 years before the filing of the application for divorce;
(ii) the court determines from the testimony of at least 2 physicians who are competent in psychiatry that the insanity is incurable and there is no hope of recovery; and
(iii) 1 of the parties has been a resident of this State for at least 2 years before the filing of the application for divorce;

(7) Cruelty of treatment toward the complaining party or a minor child of the complaining party, if there is no reasonable expectation of reconciliation; or

(8) Excessively vicious conduct toward the complaining party or a minor child of the complaining party, if there is no reasonable expectation of reconciliation.