Bitcoin is too volatile. It goes up and down unexpectedly, this tendency makes bitcoin risky. Conservative investors aren't ready for that.
Bitcoin will continue to be volatile and for that matter entire crypto currency is being highly volatile. But if you buy on dips and hold it then surely in future you will be able to make money from it. Also have the proper strategy which will help you to have short- and long-term goals and diversify in different coins. Bitcoin is the top coin and will remain for coming years and if it has to make money they need to stay invested in this coin.