Gold! There is lots of ways to lose bitcoins, like losing wallet ID, hack, keys, fire etc, but you can't really lose gold(ok, someone my steal it but that's hard), gold can survive flood, fire, earthquake almost everything. And it will never lose its value, and we can't say that for bitcoin.
if you dont want to losee yo bitcoins
you can save it in hardwhare wallet or paper wallet
Its very safe to store your bitcoin.