Here is a place that sucks the money out of the poor for no particular benefit: check cashings. You cash your check for a good percentage of it. If they had a bank account they wouldn't need to spend that money. I don't know how it is in other states but the last time I opened a bank account in California it was a pain. The amount of information needed is certainly not possible for a huge chunk of people.
That's why bitcoin and alternatives are so important. Banking for everyone.
Unless you were in on the ground floor with CPU mining, you aren't getting many coins now. There was only 6 months where you could use GFX cards, and now the "room full of ASICs" take the cake.
Bitcoin is useful if you have goods, services, or currency to convert to it. It is not "free magical money".
Its main attribute is that it is stateless... and that's a big deal and also not a big deal to those whom are in poverty.