Although altcoins grow, it still depends a lot on Bitcoin. So, if Bitcoin is really banned, I think the whole altcoins will be severely affected. Altcoins can not grow without Bitcoin.

As it has been explained numerous times, Bitcoin futures are cash-settled, and as such they are utterly irrelevant to Bitcoin price. I don't think that the introduction of these derivatives in November/December was a mere coincidence (it may not), but they were not the cause of Bitcoin price crash in late December by any means. If anything, it is possible that they were instrumental in taking traders money who got lured into the Bitcoin derivatives market, but the volume traded back then was minuscule at best to have any detectable effect on Bitcoin and its price.

A ban on Bitcoin futures Trading? - Impossible! There's no way that can happen, as this would actually limit the number of users for the coin as it locks people in and seeing how quickly the market can change no one would want bitcoin. Plus, its hard to identify the cause in market volatility.

I think exactly the same, bitcoin futures completely violate the basic policy of the crypto currency. Over time, I think bitcoin futures will become less relevant and all funds from futures will go to bitcoin coins.

LONG LIVE THE CORN!

The general ethos of Bitcoin is not to ban things at protocol level.  So even if we could ban futures trading, that doesn't mean we should.  Even if it were possible to for us ban it, I'd still be arguing against doing that, despite not being a fan of it. 

But, as everyone else has already pointed out, it can't be banned anyway.  If regulators give the go-ahead, then they can do it.  It's out of our hands.  The casino is open for business.

I don't really understand why folks here are so agitated about banning Bitcoin futures? Oh, well, they are not quite happy with current Bitcoin prices (but who is, after all) and looking for a scapegoat to blame it and then punish it for their grievances over the prices. Guys, the volume in these futures was miserable anyway, so in no case the market can (could) be manipulated through them. It is not their fault that prices went down from 20k to where they are now.  Stop searching in the wrong places for the wrong causes, even if that might make your life easier, temporarily.

Technically, there is some sense in these agitations. If we keep in mind that these futures are cash-settled only, it doesn't necessarily follow that trading more should mean value rising. In fact, cash-settled is not only about buying as it is as much, if not more, about selling, which means that whoever has more cash can short the futures down to death. If the volume were really high and significant (it wasn't), then such allegations could actually make a lot of sense, but since the volume was miserable anyway, whether someone tried to corner the market or outright bring it down was inconsequential to Bitcoin price on the markets where real coins were traded.

The Cryptocurrency sphere is very new and fragile, if you were to ban futures, the currency would still be subceptible to manipulations from other sectors.
The solution in my opinion, is for more seasoned investors to get into digital currency, and give it some sort of stability.