i don't agree with any of this.
Aside from bitcoin being the center of attention we must also include other cryptocurrency that the virtual economy has to offer.
no, you don't "have to" include anything in your portfolio. only buy those that you are interested in and think they have a good future, there is no obligation.
Bitcoin before from less a dollar has shown a tremendous increase in price that goes up to 700$.
again. this is only dreaming. the rise of bitcoin from $0.01 to $1200 is an exception and happened because of many different reasons, one of which was the fact that it was the first and only crypto that does what bitcoin does.
That potential is also potent to other currency. So it is best if we will not only focus on bitcoin but rather the whole cryptocurrency economy.
no it is not.
as long as there is bitcoin no other altcoin can rise up to bitcoin level.
although this doesn't mean that other altcoins can not be successful. and i don't mean pump and dump success like ethereum. i am talking about real success in the project. but the price can never go up to bitcoin level.