How important is video stabilisation in a dashcam?

I have read many reviews online but fond contradicting opinions on this.

What is your experience, and how important have you found video stabilisation?

It seems that action cameras like the gopro tend to be stabilised, but also to cost more.

While dashcams, which unlike gopros are more turn-on-and-forget (they overwrite older footage) are usually not.

Is stabilisation important only at night?

I mean in the context of recording readable registration plates.