Nothing goes up in a straight line. Nothing.
Those of us around Bitcoin a while are very familiar with price dips. I view it as a great thing. People get so caught up on the price. Everybody views Bitcoin as some weird stock/investment anomaly. Bitcoin is a cur-ren-cy. Hint: a currency doesn't work if only a few people hold it. The cheaper Bitcoins are the more people can afford to access some significant number of them. Long periods of cheap Bitcoin prices mean more even and widespread distribution.
That's a good point. I'm still new to bitcoin. Any chance the US would ever make it illegal?
Unlikely, at least the US has showed no signs or interested in doing such a thing and instead realize it's creating news jobs and business opportunities. The US does want to regulate it, so it's yet to be seen if regulations will be so harsh it cripples many of the benefits of bitcoin ever becoming massively adopted or if they will use more common sense regulations that allow bitcoin and the technology around it to flourish.