How safe is it?
Im not sure if you want to invest your money with bitcoin but bitcoin is really trust worthy you wont regret it once you choosen bitcoin as your personal currency if you are going to invest money then you should learn more about tradings it can help you out to growing money or bitcoins here.
We can't guarantee safety to invest in long term with bitcoin. Because if you are going to hold for a long time. There are sometime that the price as you hold it or invest with it, the price is going to increase and decrease so that is where the safety I'm talking about because you don't have assurance that you are going to be able to get profit with it.
Nothing is assured as long as an investment is concern. YOu can lose or gain money on any investment, long term or short term. If you are confident that bitcoin can be profitable long term, then go for it. If you believe otherwise, then don't. Invest on other things.
I am confident in the next year or next 2 years bitcoin is going to be a good investment, but for a long term I suggest to invest in another assets like gold or maybe stock, but if you are buying bitcoin now it's going to be profitable