The idea of needing several pieces of paper (which you will have spread across the homes of different trusted persons like parents/brothers) is pretty stressing... you never know what would happen, you could still get in a fight with the so called trusted third parties and they could unintentionally lose the papers anyway.
Valid concern. With SSSS or multisig they have no power to steal the funds and only make your backup slightly more insecure if you also make a mistake and lose your backup as well. You could always store one of the shards in a security deposit box or test tube in offsite location if you can't trust anyone as well.