What's far more a threat is price volatility and the low utility of the coin. It's just not useful as a currency.
Oh damn. Here's me using bitcoin as a currency on almost a daily basis, but just finding out it's not useful as a currency! 
Why do you say it is not useful as a currency? I can spend it for goods and services with better privacy, faster finality, more security, and lower fees, than I can with credit cards or PayPal. Just because there is not widespread adoption yet does not make it a bad currency.No widespread adoption is exactly what makes it a bad currency. Along with an inability to hold a stable value (actually more important for a currency) and the fact that the things you listed as a "benefit" are actually false. Bitcoin is slower than every current electronic payment (credit card, ACH, wire transfers are accepted in seconds vs. 10-60 minutes for bitcoin), lower fees is a big nope for credit card and ACH. Not to mention that most people on these boards are interested in Bitcoin appreciating in value, not holding a stable value, so the mentality of bitcoin enthusiasts as a whole is one of investment not for use as a currency. People using bitcoin for actual commerce and the vast minority of people involved in bitcoin.