IT & the internet have had a massive impact on everyone & everything, and that most of the developed world now depends on IT.
In my opinion, although the internet/IT is useful for keeping in touch via social networking etc., many people are now staring at an LCD screen from 10 inches away from them, alone and for hours on end. The very same people might have gone out into the real world and had a more 'face to face' social life before the internet was so absorbing.
IT has been recently proven how sites such as facebook have had an impact on people, particularly younger people. Further reading here
http://www.theappgap.com/how-does-social-networking-affect-your-health-and-well-being.html
