First of all social networks give a chance to talk with people you like. The second way is especially important in Russia where there is the censor on TV and in the newspapers, so social networks are the only way to know an alternative point of view.
Despite I depend on my gadget, I think I can live without it. I like to enjoy the silence outside of the city. The smartphone just facilitates my life. In addition the smartphone is going to be a tool in my work. So it's not only an enjoyable gadget now, though the tool to make jobs.