First of all, bitcoin can be trusted due to its primacy in the market and a long history of its existence, because it is one of the first on the market and has never deviated from its concept of creation and its anonymity, there is no such thing on the market as bitcoin.
not to mentioned how fast the transactions is and how the support of the community stays for many years now.
Never hesitate in investing in this rank number one currency and the most valuable one.
Bitcoin is the oldest crypto as it was the first crypto to be ever introduced. Due to this reason people trust it the most. There are a lot of cryptos in the market and new cryptos are introduced every now and then. But only a few of them could be trusted which have strong fundamentals. Bitcoin has a never ending trust in this case and will continue to be the favourite crypto.
of course why would you invest in not safe investment when you can put your money in a currency that you know will continue to grow each year.