it's up to you, if you want bitcoin to be used by your family, you should leave your bitcoin inheritance to your closest family, such as children and people you care about, if you don't inherit all your bitcoins, your bitcoins will just disappear, every parent The good ones will definitely leave a legacy to the people we love.
Yep, it's good as gone forever if there's no one you'll tell how to access your private keys or wallets installed to your any device.
Most likely, give it to the person whom you're trusting the most. If you're unmarried, your mom, dad, brother or sister and if you're married then to your wife or children.