The State of Illinois allows divorce on the basis of irreconcilable differences, which is considered a no-fault divorce. Divorce in Illinois can no longer be based on marital misconduct or fault, and such misconduct will not play a role in the division of your marital property or in the allocation of spousal maintenance (also called alimony). Nevertheless, the court does have significant discretion in making these important determinations, and certain types of marital misconduct can play an important role in a divorce proceeding.