Altcoins prices push the price of bitcoin up and down !!
if Altcoin is a simulation of bitcoin's path, so why not just bitcoin enough ??
Any altcoin owns its name, project and ideas, so why that altcoins are related in the pricing with bitcoin ??
Altcoins exist to diversify and provide new features to the original
Bitcoin coreBITCOIN, there are different blockchains for differing option, be they medical, game assets, public records and many more.
There is always volatility, whether this is in the BTC and ALT markets, oil, gas, gold and even wheat, It's a prospectors and traders world we are all in now.
Firstly Roger, it is Bitcoin and thats it. And if you aren't Roger don't fall for that brainwashing crap the only reason they call it Core is so that Bitcoin Cash won't be called Bcash and has relevance (Bcash>Bitcoin Cash imo). Back to the point about Alts though, most of them exist purely to try and obtain more Bitcoin. I can't see a real reason for most of them, but some of the strongest will survive of course.