Agreed. This is my fear. I don't think they are that stupid, so it very well may be a bigger plan.
I don't want to start a conspiracy theory or anything, but since we know very little to nothing about the originator, don't you think it could at least be "possible" (unlikely, but possible) that the government is somehow involved in the setting up of Bitcoin? I mean it's kinda uncanny that it began right around the biggest financial crisis in history. It's also odd that it could potentially lead to a solution to the underlying economic problem that started the crisis - leverage. All that said, I don't really believe the gov't was involved in Bitcoin's origin. I think it's unlikely, but possible. If I had to bet - I'd say it was a coincidence. But, at the very least, I do believe they (primarily the US gov't) are allowing it to flourish now because they know they can tax it for now, easily step in at any time, create their own alternative and at that point have a free infrastructure in place (via Bitcoin).
Don't get me wrong, even if any of this was true. I don't think this should stop anyone from supporting Bitcoin. What Bitcoin does is necessary. It's a necessary evolution.
In short, I am not worried at all about Bitcoin, regardless of who was behind it's origin. I'm worried about a desperate government (or world of governments) using it as a solution for it's own policy mistakes.