It's up to you, but if you choose to buy gold.. you might end up selling it again or find yourself at the nearest pawnshop, or if you love collecting gold then it can juts put it in a much secure area of your house. ahaha
But when you choose bitcoin, then... there is a great possibility that you'll get much more than you have invested. It's just a matter of patient, hard-wok, and strategies.
Gold will always has value. We still don't have a proof about whether bitcoin will still has it's value or not if world war is happen but gold has proven that it still has it's value. We should think widely in this world is not all just about economy or politic but there are also commodity, culture, and etc.