If you believe this so heavily that you are already quoting your previous comment, why not short Bitcoins at https://icbit.se/? Surely you'd make a killing on it if what you believe is true.
It's easy to make grandstanding statements from the sidelines. If you're wrong, no one really remembers. If you are right, you get to harp on it whenever the subject comes up.
Much like housing, shorting BTC is hard to do. I have no idea if https://icbit.se/ is reliable. If BTC crashes will they actually have any money to pay out? I've played around enough with real currency trading to know that even the big reputable companies screw over the little players all the time.
It's easy to make grandstanding statements from the sidelines. If you're wrong, no one really remembers. If you are right, you get to harp on it whenever the subject comes up.