Even if we do not expect to lose money in Bitcoin if we invest for the long term, it is important to inform anyone we want to introduce to Bitcoin that it has a lot of risks and that they may lose money as well because some people want to invest in Bitcoin to make quick money since people have been saying good things about it, but they need to have patience and invest for a long time to enjoy the benefits.
Investing in Bitcoin like any other investment carries risks which must be explained to people who are just getting acquainted with Bitcoin. Because investing in Bitcoin can be safe but only if certain conditions are met. For example if you are ready to hold for a long enough time. If people you recommend Bitcoin to start buying now at a price 100к per Bitcoin the price might drop over the next few years and during that time the most important thing is not to sell but to continue holding. Newcomers who are just starting with such investments might not be ready for such drops and will sell at a loss. So investing in Bitcoin is safe but for that it is necessary to follow specific conditions.