How much time you spend with your PC

Here, everything is in the title.
Whether for work, at home in the process of surfing for your study or your work purpose or optimize your machine ......

It is not necessary that you should spend your time with your computer for internet surfing it is also possible that once you have downloaded some information related to customize the computer then you could spend you maximum time for optimizing that.

So my question is very straight that how much time you could spend with you computer without Internet.