with me it started heavily several years ago.. I had this boring, mundane data entry job. Then I discovered YouTube and it provided an escape for my boredom. It soon became an addiction until the IT dept blocked it..haha.

Things like youtube and facebook are often an easy distraction for otherwise miserable jobs you dont wish to be in and never dreamed of having to do.

As a guy, theres also the distraction of 'adult films' that can easily provide that escape you crave.

However it becomes a problem with that consumes 80% of your time and you get nothing else done.