Earlier quoted context omitted.
I doubt Bitcoin will be made illegal. By itself, the Bitcoin network is just a mechanism for passing around signed messages and calculating hash values. It would be difficult to outlaw that without running into constitutional free speech issues. Where Bitcoin might run into trouble is the trading of bitcoins for dollars or commodities. Depending on how bitcoins are classified legally, there may be additional regulati…
There is no doubt that bitcoins will fall under one or another regulations. One argument would be that bitcoin is an illegal pyramid scheme. Another would be that bitcoin is means circumvent the tax system (all barter and local currency systems, for example, have to pay taxes). I'm sure many other arguments could be found.
Bitcoins are probably most at risk from being classified as a type of security, which would put them under the scope of a large number of financial regulations. It wouldn't make them illegal, but it would make them more difficult to trade.
However, in general I'm optimistic about Bitcoin's chances. I certainly don't believe it is inevitable that they will be regulated out of existence.