But is there any reason to think that the pattern will repeat itself again? It's just a belief, there's no fundamental reason behind this pattern, just because it happened twice it doesn't mean that it will happen again. On other markets, no one goes through the history of past cycles saying that the same price movements will happen again at a larger scale.
Hope is about the best reason I can think of. BTC will be no different to any other market that eventually it finds a somewhat stable price point. There are only so many times a market can go through large bull and bear cycles and still survive. It gets harder each time people get burned to convince them to come back to investing in the future.