Altcoins prices push the price of bitcoin up and down !!
no they do NOT. it is mostly the other way around. but altcoins may affect bitcoin price a little but I wouldn't say they are pushing it up and down!
if Altcoin is a simulation of bitcoin's path, so why not just bitcoin enough ??
because not everything is about price!
Any altcoin owns its name, project and ideas, so why that altcoins are related in the pricing with bitcoin ??
because most of these altcoins are only created for trading purposes and nothing more. in fact the adoption for majority of them is purely from speculators.