There is one main reason to highlight the use of technology and how it links to a mental health, the reason is we are only human. 

There is no amount of technology that can empathise with us, hold us when we are down, cherish our glorious moments in technicolour and in the here and now. No computer can congratulate when you've succeeded or pick you up when things haven't got the way you wanted them to. No phone can let you confide in them and just listen, be there. No screen can give that closeness you so desperately need as a human. 

"The more time young adults spend on social media, the more likely they were to have problems sleeping and report symptoms of depression"- University of Pittsburgh School of Medicine