Bitcoin had brought a great revolution in my life because previously i had no option top earn money online, i search for job and ended up finding useless jobs which don't pay even $1 monthly sop after getting bitcoin i can now make $20 easily from bitcointalk and faucet. Thank bitcoin for changing my life.
That must be ridiculous that you got your life changed just with $20. But you have not mentioned that you are making $20 in one month or weekly, but I believe this is not possible within a day. Still, in third world countries also $20 is not a big money. But for the student, as a part time work might be a very good amount to change your life.
Your doubt is right as $ 20 is not a big money to get life changed. But we need to think in depth like the struggling for finding a big and right way of earning online continues before bitcoin. But, with bitcoin he finds his struggles got over. That must be a very big change in his life just due to bitcoin introduction.