It seems to me that in a contested divorce, the only people who win are the lawyers. If you can finalise itt out of court with your spouse, an uncontested divorce is cheaper and easier to get through court. Some countries or states have a ruling that you don't have to have reasons for divorce; it is enough just to want one. If you disagree with the grounds, you could tell your spouse that you will go ahead with the divorce but want the reasons modified.
If you disagree with the grounds for divorce, prepare for a fight. Contested divorces tend to be very expensive and time consuming. On the good side of the ledger, a contested “grounds divorce” carries a significant burden of proof. You may find that as the divorce proceedings continue, the grounds-seeking partner may need to back away from the initial claim and offer a no-fault divorce. It is highly appropriate to seek the counsel of a seasoned family law attorney if you are dealing with a grounds divorce. If children are involved, a Guardian ad Litem will be needed too.