Metamask is used through your browser. Although encryption is used, in our daily life, we access many websites through our computer.
This causes a virus to enter our computer. Especially "Keyloggers" entering our computer can easily record your information by following all keyboard movements.
So you are putting your money at risk. In fact, Metamask acts as a bridge rather than a wallet. In other words, it provides access to Ethereum supported wallets via the browser. Although Metamask may seem complicated at first, it actually has an easy-to-understand interface. I currently use the Metamask wallet, but of course I do not make my big investments here. Keep your large investments in your hardware wallets.