Personal accident claims can happen quite often as compared to other claims. In your case, do you have any bad experience of claiming by your current agent? If not, i think you can continue on.
PA is very affordable generally speaking.. And while it covers for accidents only, the coverage is still considerably high when accidents is one of the top causes of death as well. Still, not everyone will find it necessary.
Some questions to consider first on whether to renew.. What are you working as? Have you been claiming often from PA? How is your company medical coverage like?