Let me show you why wealthy men like changpeng Zhao(cz), Brian Armstrong, Jed mc Caleb etc can hold billions in Bitcoin without being afraid.
Take note they're wealthy men.
So invest what you can afford.
If you have an amount that you can afford to wait to make a profit why not you were afraid?
People who understand the Bitcoin concept will surely not hesitate to invest in Bitcoin since they know how much potential it has and people you mentioned above they know it.
It's a lot different when rich people invest than the poor ones taking an investment. Of course, those rich men have always bigger opportunities to buy bitcoin and expect huge profits as well. While these low income individuals will have to hesitate buying bitcoin because once their investment lose, that means their finances will end up struggling. But one thing is certain, no one is rich or poor when it comes to investment. Everyone ends losing and gaining, but there's always a great advantage if you have a smart and knowledgeable mind that makes you see the real potentials and value of a certain investment.