I dont trust anybody so sadly if I die my bitcoins go too. Im only in my late 20s though & have nobody to leave my coins to.
Why would you need to trust someone in order to create a legacy plan?
All my stuff is going to my best friend currently, he knows how to access them and knows the access code to my wallet via my iOS app.
Pray that your friend doesn't ever get in trouble or in serious debt like gambling debts with some violent people. He'll choose his own life and well-being over friendship, you'll see. Friendship is nice but given a serious life threatening choice he'll prefer to steal from you than lose a limb or get beaten up.
Don't trust anyone with money!