The main reason for this rather long term is not the animosity of the ex-spouses but the general slow motion of any process that involves multiple participants with their own agendas and schedules. There are attorneys and accountants on both sides who all have other clients and there is a judge in the middle, who has an overloaded schedule, plus there is a small army of other people who get involved for shorter periods of time - document processing services, subpoena and HR departments, appraisers, vocational evaluators and so on. All participants have complicated schedules which are hard to coordinate even under the best of the circumstances. These scheduling difficulties account for most of the 18 months average. Add to this mix parties' desire to get even or some other tangential agenda and you can count 3 years or more before the divorce judgment is filed.