My main concern about Bitcoin is the way supporters are given an inch and take a mile, making assumptions like "Bitcoin WILL replace the Dollar"

"Bitcoin WILL end the credit system", a huge issue with this is it inspires complacency. People love the idea that they don't have to contribute to anything, and that it will all work out anyways. However reality is consistently informing us otherwise, that we need to be vigilant to protect things that we care about. If the public position is that you don't need to worry about it, my position is that you must worry about it DEEPLY. And actually DO something about what you are worried about! Sitting by saying "Bitcoins gonna do this and that" doesn't cut the cake.