Well, most of the time during the day I am on my computer. From 24 hours I spent 10-12h per day...
I know it's sounds crazy, but my week is always scheduled and most of my responsibilities are connected with my PC. For example: When I get up the time between 12:00 pm and 16:00 I spent on PC by doing my job, reading and listening music. The next 2-3 hours are for chilling and I am listening some ambient or chill out music. During the night period between 00:00 and 03:00 am I am watching or reading something.
So, as you can see I spent min. 10h per day on my computer.