I save bitcoin because of the latter reason which is for future purposes. I can pay bills through bitcoins as alternative which saves me money(for I will not touch the money I had in bank and the income I earned from work) and time going in the establishment where I pay the bills(I pay the bills through 7/11 stores which I was near with). Moreover, I'm Planning ti buy a gaming computer so I will earn and work harder than before.
it's very good because you also work in the real world but it's usually very difficult to divide the time for these two different jobs. I'm saving bitcoin and financing my life with income from working in the real world because I think bitcoin will be more useful to be a savings or an investment.