Why should I use Guard ?
Guard is additional security to your wallet. It lets you use your wallet as you would use it normally.
Other protocols make you lock your crypto assets into a smart contract, with Guard, you're free to use it however you want because you don't have to lock it.
It's also a web2-friendly protocol, even your parents could access it as you only need to input a mail to be a guardian. And it's the same thing on the inheritor's side: you could create a mail for your child 3 years old and whenever your time has come, she/he will receive the fund at his mail address.