The legal grounds for divorce will vary from state to state, and if a couple is seeking to end their marriage they will have to research the types of divorce available to them in their area. Currently, the clearest ways to view divorce are as the no-fault or fault varieties; and these each have the legal grounds under which they are established. The no-fault types have very flexible legal grounds for divorce proceedings and will often accept something as simple as incompatibility or irreconcilable differences as a suitable reason for granting divorce. In the case of the fault varieties, the legal grounds for divorce usually has to do with some sort of cruelty, adultery, desertion, impotence or even if a spouse is sentenced to a lengthy prison sentence.