the main reason is when they joined here, they think that they will make great money from this world. That is why they have heard about this world from friends, but they didn't make any research about this world, there is not any quick money, maybe you can be lucky, but it will not always happen. If you can not be enough patient, as you said you will lose your money.
many people trapped in their fantasy , they think earning money was very easy in cryptocurrency market. today bought bitcoin and tommorow will earn money, unfortunately its not happen now . many project failed in early stages and price dumped hardly in market. finally our skill in research will take main role in our success story investing in crypto market.
There's no relation to bitcoin if a lot of project will fail because bitcoin can rise even if altcoins will have to suffer.
As we can see with the market trends, when bitcoin is rising, altcoins sometimes dump and sometimes they just follow, so it tells us that bitcoin is far superior in the market, that's why we called it the king.
Bitcoin dominance now at 62%, that is still too high, all altcoins vs bitcoin can't even beat the king.
https://coinmarketcap.com/charts/#dominance-percentage