Gold is old time fashion. In this time it is also fashion but not like as a past. If you buy gold and then sell it gives you loss but if you buy Bitcoin and trade you can get bigg profit. Its reason people are investing in Cryptocurrency more then other businesses.
How can you say so that it's old fashioned? If it's old fashioned then it shouldn't be existing as a luxury jewelry right now and it shouldn't be used for that matter even during the times of war? The reason that you give regarding why people invest in cryptocurrency is pretty shallow to be honest, not everyone can invest in gold you know?