Gamblers use bitcoin for not giving any identification document and can do gambling in any age, online job seekers use bitcoin as payment for job, so their are so many ways for people to use bitcoin.
yes that can be right but i think there are so many other ways for which the use of bitcoin is too much easy and helpful. for example for online gambling bitcoin is one of the most easiest way to transfer money from one place to another.
yes you are absolutly right we can use bitcoin for a number of purposes, i think the most important use of bitcoin in present time is to use it for trading and investment, because in present time bitcoin is not using as currency in most of area.