That would be a drop by 85% of total value
Total value or ATH value?
ATH value of course, or peak value if you prefer.
Initially, the Bitcoin was created as a decentralized payment system. It's just a shame to see that people are now using it as an investment avenue or opportunity. The use of it as an investment, in my opinion, has led to the price instability that we now experience. In addition to your suggestions, it will be nice to see the Bitcoin being used more for the actual purpose for which it was created (payment system). I think when the Bitcoin is being less used as a means to accrue wealth, its price will become more stable and will lead to a better ecosystem and a much more widely adopted coin.
Not really. The incentive to store and hold is completely normal, especially in the times when the gold standard no longer exists. You can't hold fiat money because it's inflationary, so people are naturally looking for things that appreciate in value or at least manages to hold relatively the same value throughout the years.
There's a reason why Bitcoin is called the digital gold. Have you seen anyone pay with physical gold? Bitcoin combines deflationary precious metals and modern fiat-based payment systems.