MetaMASK provides an easy way to connect to the Ethereum blockchain, but remember that web wallets such as this will never be 100% safe. I think its best to use MetaMASK with a small amount of ETH and leave larger amounts of ETH on a hardware wallet instead.
MetaMask is such a cool way to manage your Ethereum. You can use it in a number of browsers such as Chrome, Firefox, Opera, and Brave by just installing a simple add-on. It makes life so easy when you need to access your ETH.