No investment is safe specially if you don't know what kind of investment/market you're into. It's never wise if you avoid investing in Bitcoin as well. 
The choice of investing is individual decisions and we have time and again heard cries from people about missing out on investing on bitcoin when the price was really low and even after the last rally the market gave plenty of opportunity for anyone who wants to invest in the market and even then if someone is not able to make a wise decision to invest in bitcoin, then it is better for them to stay out rather than going at it when the market peaks and then cry out that they lost their money when the market goes down.@ OP You cannot consider any financial market as a safe heaven as you never know what will happen and so is the case with bitcoin.