Very much here to stay.

If you're in doubt about whether you will invest your money, all or not then you did the right thing of asking first because it shows that you're interested in it.
But, don't invest wholly if you don't understand it the whole time. It is a matter that you should DYOR before doing anything else with your money.
In investments even if it's bitcoin, you can't skip the volatility of it, and if we can take it easily. Maybe, you can't handle it well. And that's why you have to test and do it when you're ready after your research.