Everything will eventually to to $0.00 given enough time. Bitcoin will go toward zero after the world starts adopting something better to replace it. So far, Bitcoin is growing in popularity every day. Increasing usage forces the price to rise in conjunction with the capitalization.
This week, the IRS announced that it will require Americans to use what could be a very complex method to track Bitcoin gains. That caused the price to drop more this week. Ultimately, however, a simple method will work just fine to calculate Bitcoin gains or losses for most American Bitcoin users.
The smart investors bought as many Bitcoins as could be afforded this week to take advantage of the price drop.
Corey Chambers, The Bitcoin Blogs