Yes bitcoin is our income now, many of us will work for bitcoin to get income from there. You can get many sources just to get income. But you will get it after the date of distribution.
Yes so many people are getting income from bitcoin through different ways, but still i think that most of the people are not taking consider it as their main income. In fact people have their day job or a stable business for their main income, while they consider bitcoin as their part time job or business and the income that the get from bitcoin consider it as a secondary income.