What can I use as grounds for divorce in Arizona? Do irreconcilable differences count as a valid reason?

Arizona, as well as most other states, allow for a divorce on “irreconcilable differences”.  Although in Arizona, the phrase that the marriage is “irretrievably broken” is used, it shares the basic meaning.  This is what is used when the parties do not have standard “grounds” for a divorce, such as adultery, abandonment, or drug abuse.  Instead it means that the marriage is no longer a valid relationship and the parties wish to go their separate ways.  A primary difference in using irreconcilable differences or that the marriage is irretrievably broken as grounds is that neither party is at fault, therefore a disproportionate share of the marital estate is not necessary.  However, other grounds, such as adultery, abandonment, or drug abuse, allege that one party is to blame for the divorce and the other party should be compensated.