That's because you make an effort to get on and post.

Even if it means I'm up to around midnight, I will try and get my 4 posts a day in. I managed it when I had computer troubles and had to reformat at 10 PM.

Some people, however, may come home from work absolutely knackered, or get home quite late and only have time to have something to eat and have a shower before going to bed.

8:30 to 9 will give a person an hour or two after work to do what they want - in your case come on here, play GW on your GW days and Halo 2 on your Halo 2 days, and whatever else youn may want to do. It only really takes 15 minutes to get 4 posts in, and then you've got 45 minutes or more to do something else.

However, if you worked a twelve hour night shift, then you'd come home 6 or 7 in the morning, have tea/breakfast, and go to sleep for the rest of the day beforen waking up, getting ready, and scooting off to do their twelve hour night shift again.