Because every day more people starts using bitcoin and price will go up steadily with ups and downs.
true to start many new users in the adopter or the bitcoin will increase demand becomes more and automatically bitcoin prices will rise, so bitcoin has great potential
There is no guarantee this will happen, but i expect that in time we will see more good things for bitcoin, adoption wise.
Using bitcoin in means active make a transactions and buy or sell bitcoin frequently, it is become reason why the price of bitcoin increase. If the activity continues then prices will continue to rise Bitcoin. So in my point of view it is right that bitcoin is very good investment.