I do not know what makes this bitcoin special compared to other currencies and commodities, whatever makes people interested in investing here, obviously this bitcoin is very special what makes it special that's what makes special bitcoin.
you are right bitcoin is much better than other currency because of some main reasons, bitcoin is one of the most secure and popular,
bitcoin price now reaches to $19,000 and no other currency reaches to that level and also people get effected only because of the price thats why bitcoin is much special than other currencies.