Addiction? Dependence? Need? Preference?

So thay found out that employees can easily get addicted to email sharing: some of them spend half of their working time doing that....while reading the description of their habits - like they just wake up, wash their faces and turn on the PC and receive the emails - I found a bit of me too...but then I thought that they probably share stupid forwards the whole day why my pushers give me a way better quality addicting substance.

Gripped by Emails