bitcoin is a revolution, but it is only a start. Its features make it not to be the future payment. But it is a pioneer. And it means a lot to the community. There are so many alternative cryptocurrencies, but most of them are shit and will die or have died. Bitcoin will exist and valuable for ever. Bitcoin is the first in history. The future payment are coming, i think, it won't be long.
I think $500 is pretty much the bottom. Good time to buy.