Question

Why does all the altcoins go up/down along with bitcoin ,why cannot we compare it with USD/euro/GBP ?

Thats because they are all paired to Bitcoin (BTC/DASH) .. the more FIAT pairs a coin has (EUR/DASH & USD/DASH & OTC trading) , the more independent
a coin gets from Bitcoin.
Then tell me how the hell will Dash compete Btc while is 100% depended on it??why do dash devs repeat that dash is better or will surpass btc while there is not any signs of that.
We already got to 0.12 on what appears to be a pump and dump scheme, but with mainstream adaption through Dash Evolution where Dash can establish itself as an effective low fees instant
transaction decentralized solution provider and with an exponential increase in our FIAT budget funding enabling the funding of larger projects which will have a larger impact on Dash,
i can easily see Dash reach that 0.1 price range again and pass it (thereby gaining on Bitcoin). Speculation driving the price will then be replaced by actual useage driving the price.
Also certain economic factors should come into play later on, when more and more masternodes (either full masternodes or by then decentralized masternode shares) and a steady decrease in
our blockrewards will create scarcety on the market. This all will take time, that is why this coin is described so many times as a good longterm investment.
I think Bitcoin will function more and more as a store of value (digital gold) coupled with high fees, while Dash will be far more active in the instant payments market with its low fees and it will be able
to open other markets and create opportunities through its decentralized budget funding.