Here is a fun activity sheet just for kids like us! 
Discussion
What a bad list lol
Is it less durable because it's easier to lose keys? Not a great argument. Only as durable as you are responsible...
Yeah I feel like we need some parameters around why gold is "durable".
Firstly, gold is physically soft. Sure, it can't be atomically destroyed, but who wants a puddle of molten gold or gold vapor? Also, you can't back up your gold, and I feel like redundancy should be taken into consideration for durability.
Secondly, keys can be made just as durable as gold and even more, depending what you stamp your keys into. Keys can be backed up, geographically distributed, etc...
You could even stamp your keys into gold! 😂 But that's not very "durable" steel is more "durable"
But I get it, gold does not corrode. In the atomic sense it's indestructible. Which is cool.