As AmoreJaz said, no one can be confident and guarantee that this market will be immortal. Although bitcoin has become much safer than it was years ago, it is still considered a volatile and risky market, and still cannot be compared to gold or real estate in terms of safety. So, depending on each person's taste, there will be suitable choices, we do not need to force, criticize or even discriminate against them just because they do not choose bitcoin.
People should only invest in bitcoin when they have basic knowledge and are willing to take risks, don't invest just because of FoMo.