The softcams are there to enable you to use your valid viewing card. You can own a valid viewing card for a subscription, but the cam can be locked to a particular device, the softcam allows you to use your valid subscription on a receiver of your choice.
Before we get all the snide yeah i bet no one has a valid subscription, you would be surprised how many do especially our European cousins and that is all the support you will get on this site.