What are the grounds for divorce in New York?

Under New York divorce law, you have to have a reason that the court recognizes in order to get a divorce. You can’t just say, “we don’t get along and so we want to divorce.” In other words, there is no “irreconcilable differences” or “no fault” divorce in New York. You have to, for lack of a better word, earn your divorce. You have to have grounds. The thing with the fault issue, though, is that the other side who wants to get out of having to pay a ton of money (assuming there is a ton of money available to be paid) can use it as leverage. Actually, both sides can use it as leverage in a divorce. Say for example one party is having an affair and the other party wants out. Then the party who wants out can agree to forego adultery as a ground (which is likely to result in a lengthy hearing and trial which can become really expensive) if the other side agrees to pay X number of additional dollars in a property settlement. In other words, fault in and of itself is an issue that can be used to negotiate economic gains in a divorce.
Grounds in New York are as follows:
1. Abandonment–Spouse left for one or more years.
2. Constructive abandonment–Spouse has not offered sex to you in one or more years even though he or she is not impotent and there are no physical reasons why sex could not be administered.
3. Adultery–Spouse has been caught in the act or has admitted that there is someone else. One act of adultery could be enough.
4. Imprisonment–Spouse has been incarcerated for 3 years or more.
5. Separation Agreement–Spouses have been living apart pursuant to a separation agreement for 1 year or more.
6. Cruel and unusual punishment–Spouse engages in all manners of cruelty and torture including flaunting an adulterous affair, verbal violence, physical violence, sexual violence, etc.