Why Ben can't be a Ghost Whisperer?

If you are a fan of Ghost Whisperer, you will know Melinda Gordan famous screen in almost every show will be with tears in her eyes and having the ghost cross over into the light.

If Ben is to be the Ghost Whisperer... this is most prolly turn out like this.

Earth-Bound Spirit: Is that light for me? It's beautiful... I think I saw my mum!

Ben: Oh no. No. No. That will be the Train.