I strongly disagree with your above statement. Everyone thinks in his own way but try to find some valid reasons before to say any coin is worthless. We all know that the FUTURE is belong to BLOCKCHAIN TECHNOLOGY then how it is worthless? I understand that BTC dies many times but it came again with an unexpected bull run. Well, who knows exact!! 
Yes - blockchain is a good technology with many uses. But that has nothing to do with the future of Bitcoin - Bitcoin is just a product (and a poor one). Internet is a good technology - but that does not mean that all the internet companies that launched in the dotcom bubble were the future, many went bust. You have to seperate completely between the future of blockchain and the future of bitcoin.