As most people are aware, filing for divorce in California does not require grounds. Either party may file by claiming irreconcilable differences that make living together as a married couple no longer viable. \
You are not required to prove your marriage is insupportable, just saying it is will do. You can save time and money by choosing this option. You do not need to provide evidence to back up your reasons, which you would in any other case.
If you do have a particular reason, you may wish to give this instead, even if it costs more and take more time. Specific motives could influence the amount of money you leave the divorce with. This can be particularly beneficial in a high-asset divorce, where there is more at stake. If your spouse did something wrong and is the biggest earner, it could help you receive a larger share. If you are the one who made money, and your spouse did something wrong, it could reduce the percentage you give away.
There are three reasons you could give if you wish to blame your partner for the divorce — adultery, abandonment or cruelty. A judge may favor you if you can prove your spouse was guilty of one of these three things.
There are three other reasons you can file for divorce if your spouse is not living with you: if you have lived apart for three years; if your partner goes to prison for a year; or has been in a mental institution for three years with little hope of recovery.