Here bitcoin's value Increasing overall per year it is only because the users are increasing in this field and they are making Thier involvement by putting Thier money and getting a part of the bitcoin amount holder and that why the value of bitcoin increasing .
So this is a simple thing that we can understand in very simple way .
And also here we can see that not only bitcoin is here a option for us but many better better coins are available for us with which we can make big. So understand the game and make big .