All investments are speculative. Any thing can be a currency/money, it's just a matter of how good it is at being a money/currency. No doubt that USG wants to maintain USD hegemony, and they will continue instigating color revolutions and endless wars to do so. The downside risk of USD collapsing is infinite since all fiat currencies trend to 0 (guaranteed loss of purchasing power at least 2% a year). Upside risk of BTC's purchasing power is asymmetrical (~+250% year-over-year on a log scale). From a financial risk perspective, it would be dumb not to allocate a least a little bit to BTC to hedge. Just make sure you have a hardware wallet and hold your own keys. Not your keys, not your coin, as they say.