You guys should stop buying Bitcoin - how am I going to fatten my wallet if the price keeps rocketing up?
What are we going to do when the Satoshi achieves parity with the dollar?

Made my day, this is what I keep thinking. Just stop already and let it go down again so I can buy some. Not willing to buy at this price, its insane. Period.
The best factor that will make bitcoin price goes down is that miners should switch to other altcoins so that the fees of bitcoin transaction would go high. In this way, investors will sell their bitcoin and make the price of it goes lower, an opportunity for others to buy more bitcoins.
There is no possibility that the miners will transfer into another coin because it is really profitable for them to mine bitcoin and to support the network and that will be the reason for them to continue putting some machine to support bitcoin because of the profit that they can get. The price of bitcoin will not go down unless there is a huge bad news.