Right from time, it has always been bitcoin, any other digital currency in cryptocurrency are altcoins, which means that they are following after the footprint of what bitcoin serves, but they can't achieve being up to the value of achievement of bitcoin despite their attempts of being noticed, while in some conditions, you will discover on how some newbies couldn't achieve understanding why they needed bitcoin more than any other altcoins in crypto, that is why you can see some not having bitcoin in their portfolio, but running after altcoins for an investment, because they are less informed about what is at stake.