Can I trust MetaMask?

Could you please elaborate on the trustworthiness of MetaMask? As a cryptocurrency enthusiast, I'm considering using it for my transactions, but I'm hesitant due to the various security concerns surrounding digital wallets. What assurances does MetaMask provide to ensure the safety of my funds? How does it handle private keys and transactions? Also, are there any known vulnerabilities or hacks associated with MetaMask that I should be aware of? Thank you for your insight.