It is a good advice if only OP partner can understand the volatility of bitcoin when it goes low, but Bitcoin still remain the best alternative for investment. If at all in the process of investment and the price falls their is nothing bad about it and no need to panic because the price won't remain low for ever. But saving the money in fixed deposit account even with the interest the bank will give it doesn't make sense because fiat is known as currency that Normally lose value.
Bitcoin is not a bad investment to grow money if only one is good enough to understand the market and how it works. It is advisable for people who are not ready to face the challenge of the volatility of the market shouldn't border to invest in bitcoin.
The bitcoin was the unique one for the investors to keep their saving for the longer period.The bitcoin price is decentralised,So it’s easy to inverse at any point and get profit at the next all time high.Some people lose their valuable coin by doing the panic selling at the bear market.The bear market is the common one in all the investment platform like stock and the cryptocurrency.But the bear market should be used in the good way,So the trader can get the profit at the time of the bull run.