I'm not sure if what you wrote is just a trolling, or really your knowledge is so little..
Adoption Bitcoin is constantly moving forward and developing, every day new websites and ground-based points accept BTC as a form of payment. Bitcoin is still far from the mainstream, but we know very well that the adoption process is always very long.
When it comes to the last price drops, you should know that Bitcoin has already "died" at least a dozen times. So this is not the first, and not the last time when we will see similar situations.
Replacing of fiat currency probably will never happen - on financial market is enough place for fiat and for digital money.
Take it easy
bull run sooner or later will come