It takes too much time to build a protected and secured your funds from your wallet.. in bitcoin i only trust on the wallet like coinbase and blockchain
If one were to store all of their wealth into a cryptocurrency, instead of exchanging it for an equally valued good or service, and the market dropped out because it was stolen or exploited, then it would have no value to anybody.  In that case, another medium of exchange would present itself.  The goods (bricks, steel, gas, solar panels....etc) and the services (doctors, lawyers, engineers....etc) are where true wealth abides, not the means of exchanging such wealth. Another danger is the price of coins, it can go down at some point and it loses value. So you have a loss... Because of it, it's important to know in which coins invest, to don't lose your money price on medium or long term.