Though abandonment was grounds for divorce in the past, abandonment is no longer grounds for divorce in California. Since California allows no-fault divorces, parties can file divorce only for irreconcilable differences or for incurable insanity.
Until 1970 California divorces required a grounds for divorce, such as fraud, abuse, abandonment or adultery. California became the first state that allowed no-fault divorces, a tradition that holds true today. No-fault divorces do not require the parties to state a reason or blame for the divorce beyond irreconcilable differences.
Under California Family Code Section 2310-2313, irreconcilable differences are "substantial reasons" for dissolving the marriage, as determined by the court. In practice irreconcilable differences are the standard reason given for divorce in a no-fault divorce, regardless of the reason for the divorce.
The California Family Code provides grounds for divorcing a spouse with medical proof that the spouse is insane without hope of being cured. Proof of a partner's insanity does not remove any financial obligations for support.