Actually I think it does, especially for certain types of mods. I’m not sure how much fun dark, scary mods would be at 10:00am in the mornign. Even if you had the curtain closed, the ambient noise and your state of mind all play a part.
Personally I prefer to play sometime in the afternoon for two reasons. Firstly becasue whatever I am doing just beofre I go to bed I often dream about it. I sleep badly as it is and to spend the night with Headcrabs jumping at my face would make it even worse. The second reason is that I like sitting down at my desk and knowing I have plenty of time ahead of me to paly. I can’t really get into a mod if I know I have to stop after a short while. Admittedly I don’t play for long periods any more but I like to have that option!
What about you?