I really don't understand why people lose hope like shit after droppings. Bitcoin is very volatile and it can of course easily reach 20000 dollars back again. People are over exaggerating bear markets for bitcoin.
People, usually as the price drops, lose optimism and predict the worst. That's why then it's hard to return the previous price levels. I agree with you bitcoin can easily return to ATH again. It's a matter of time when it will happen because it will be hard to grow so fast as at the end of last year.