Etheruem is the king of coins, I agree and at the same time I disagree. I agree in the sense that etheruem is the king of all altcoins, it is very popular and affordable to acquire, most altcoins uses its platform to operate because its simple and secure to use, it can be easily traded but all the characteristics above doesn't make it superior than bitcoin, it just serves as an alternative to bitcoin, bitcoin remains the king of all coins. All other coins including etheruem are struggling to meet up with the standards bitcoin have created.