In my opinion, I think bitcoin has much worth compared with the other altcoins considering that btc is the 1st ever digital currency that had made an extra mile achievement especially with the last quarter of 2017 where it had reached it's market value up to $20K USD. BTC has more supporters and investors as compared with the altcoins where until the current situation, more and more people are encourage to get involved with btc because they are seeing good profit once they had invested.