One of the key use cases of Bitcoin lightning is low cost transactions. This enables merchants of digital content to take small payments for one off purchases where previously that would have been cost prohibitive. 

Bitcoin gives us an alternative to to the subscription model. We all know the scenario of signing up for the free trial because we want to see that one thing. Then we forget to cancel the service that we are not using and get stuck in a passive form of abuse for months until we notice the payments going out. We can do better than this!