Investing in bitcoin is a risk, as the value can crash tomorrow.
I'm holding too so far, I believe in what bitcoin represents, so I'm taking the risk. Don't invest more than what you can afford to lose however, but if you can, you should buy more.
Also have a look in other cryptocurrencies.
Great Principle, yeah i strongly agree. Investment is risky so don't put all your money if you can afford. Don't risk everything it is safe that you save for your own. the rate can fluctuate every single hour and day, but every people here are holding too far as they believe that the value are getting high.