My friend has already invested in Bitcoin with my advice. I clearly told about that Bitcoin is a good investment and how to secure the investment. I also explained the risk involved in this, but still he is interested he invested in Bitcoin.
That is a good thing, you will not be mistaken if he makes a mistake in his investment after you explain the risk and suggest how to invest in bitcoin safely.
Your friend may have learned bitcoin outside what you have given that makes it confident with the opportunity.
I have also done what you did, but what I have explained to my friend he did not remember what was concerned in the investment of Bitcoin, one day he had panicked in his investment and forcibly selling Bitcoin in last year and suffered sufficient losses Quite large, and strangely he blamed me and acting Victim playing, he made me who plunged him to the loss he experienced, it made me disappointed and lazy when my friend asked and asked for guidance.