I think the same about answer on this question, this depends from person to person and where they live. With my campaign earnings I have some extra money each month, but in my country for one month a family needs more money then you can make here, so I always look for some good investment, gambling, I`m buying altcoins for future.
I`m sure that in some countries its possible to live with money from here, but why to stop on that when bitcoin offer so much to us. There so many innovations here that it would be a bad decision to miss all that, cause its hard to try everything, but focusing on couple good things can bring more profit.