I can quite honestly say that Bitcoin will never reach less than $100 per coin longer than it takes me to move my funds to exchanges. I can quite happily keep price above that level by myself, thank you.
I have seen a lot of similarly honestly thoughts that BTC will never go under 500, under 400, under 300, under 200. Reality is everything is possible.
Not so. Everything is not possible. For a ridiculous example, if you place a limit order to purchase 21,000,000 Bitcoins at $100 per coin, tell me how price could ever drop below $100? For a more realistic example, you could do the same thing with an order for 100,000 Bitcoins and still accomplish the same thing, as there aren't a great deal of Bitcoins actually available for selling at exchanges right now.