Definitely bitcoin is more attractive for investing. BTC is going to replace gold for the next decade, but I don't think that it will last more.
Well I will prefer bitcoin instead of gold because in gold you can lose a you money and bitcoin is such a currency that it will never give you lose and believe in if try any sector here such as trade ,investment so always on time you can get your profit and if you buy gold and even you help it on hold so after you long wait there will be a deduction in gold and bitcoin is totally different then gold as much as you keep it on hold so its profit will be high.