I'd say a person's opinion on Monday depends on whether they work or not or have any responsibility. Naturally theres a higher probability that they'll dislike it, as it takes them out of the relaxed state of the weekend and forces them to get their body and mind in gear for another work week. It disrupts the peace they had and forces them to concentrate.
Some people deal with it better than others, so some complain and some don't.
If nothing else, it goes to show how fickle a person's opinion can be, and how easily it is swayed by any ammount of inconvenience.
If theres any point to this post at all, it would be that we should train ourselves to love and enjoy every day and be grateful for it, at least to the point that the reality of a 9 to 5 job is inconsequential to our enjoying our day and our life.
Monday is, arguably, the most important day of the week, since how you feel on this day may very well lead you into how you feel the next day and so on. By creating a positive chain of thought, what day of the week it is won't matter so much because it won't affect you emotionally.
