"I believe subscriptions for mobile apps are the best thing that has ever happened for both indie developers and iPhone users."

Not at all.

Users hate subscriptions, will therefore not subscribe to your product. I sure as shit won't (and I frankly don't know anyone else that will).

Users particularly hate subscriptions they don't use. How many of us have paid for an Adobe subscription, or an AllTrails subscription only to find months (years?) go by and you barely if ever used said app?

It creates a kind of anxiety: I am paying for apps with a subscription but not using them.