Bitcoin wallets let you be your own bank, but not all wallets deliver on this promise. When choosing a Bitcoin wallet, you need to consider the following points: 1) security, to ensure the safety of your Bitcoins; 2) privacy, to protect your financial privacy; 3) friendliness, the wallet should be easy to use and fully functional. Custodial wallets and non-custodial wallets each have their own advantages and disadvantages. Custodial wallets need to trust a third party, while non-custodial wallets need to keep their own private keys. In addition, the wallet can choose hot storage or cold storage, and cold wallets are relatively safer. In summary, the best Bitcoin wallet is one that keeps your Bitcoins secure, protects your privacy, and is easy to use.