How do I really understand retention in a subscription business?

You grasp the retention math on paper, but you do not yet feel it in your bones, and you are honest enough to admit the gap. That honesty is worth more than pretending. The felt understanding comes with time and attention, not from staring harder at the spreadsheet. Retention is really a story about whether people keep choosing you. Behind the curve is a simple human question repeated every month: is this still worth it to me? When you start hearing the numbers as thousands of small yes-or-no decisions, the math stops being abstract and starts being about people you can picture. Go find out why people stay and why they leave. Read the cancellation notes, call a few loyal customers, listen for the real reasons. Do that until the retention curve has faces behind it. The math will settle into your bones once it is attached to people.