A 50% decline from current levels would put Bitcoin at $5000. That is still a tremendous gain from the beginning of last year. Not many people will be complaining, apart from greedy people who wanted to double their money in a week's time.
A part of mee feels like it's necessary to crash back to $5000. I would still be in profit a'd able to snatched more up for the long run. But at the same time I don't want that to happen. Where I'm from bitcoin coin has gotten a lot of attention yesterday when it hit $10,000 but a lot of people here are still skeptical or find bitcoin fishy. So if it would crash by 50% everyone will be like : "I was right."