It is absolutely beyond most realms of possibilities at this point.
Do you live in the US? It doesn't matter I suppose given how many people here are paranoid about our government, but the truth is the US doesn't go around banning technologies. And there is no indication they will ban bitcoin. They aren't banning gay marriage. They aren't banning bitcoin. The NY regulators lead these type of financial decisions in the US. And the hearings made it clear they will support bitcoin and bitcoin innovation. The US takes pride in being world leaders and bitcoin is no different.
It's happening. It's no longer if. It's when.
Well, I appreciate your confidence.

(I don't live in the US, FYI, but I am a US citizen paying US taxes.)
Gay marriage does not threaten TBTF banks or the government's control of money and taxes (unless you're a homophobe, in which case you might think it does

). That's a pretty important difference.
This is the same government that promptly squashed e-gold, etc. Right now, IMHO, they're starting to realise they can't effectively control or tax Bitcoin. What happens then is anybody's guess/gamble.

I think a healthy dose of mistrust towards the government and the banks is a good thing, but you're overdoing it here. We're not important enough to hate yet. By the time we are, it'll be too late for them.