Ofcourse invest it for example : if you invest your money into bitcoin when 2014 then you already gain profit up to 3x ( when the value reach $ 1000++ )
If you just save it, you can get much profit like invest can got !
I look at it as like saving. It's just in the form of bitcoin. But it could be viewed as an investment too if you are an investor.
If you are very sure about where you are going to invest your money, then it's good to invest it, just like what you've mention, many already speculated that the price would skyrocket this year, and that is true, and those who believe and invest in bitcoin, probably having a good time now. Sad to say not all of us have that strong faith on bitcoin and also, we are after the safety of our money, so we save it.
