You're really right @walkingkeys
The problem surely is not that you have to work on Monday but the nature of the work. I've never known that bad monday feeling as I've never had a real job, I'm pretty young and I'm a student, I've been attending school since I was 3 years old.
Right now I'm in College and since going for classes are the only sort of work I knw, I dont get the bad Monday feeling since I love the course I'm doing and going to classes everyday entails meeting friends, seeing people and catching fun.

But when I have, due to negligence, piled up a lot of school work and have a lot for that week thats when Monday gives me the horrors.

Though I cant really relate to what workers go through I completely agree that if one loves what he does waking up on Mondays knowing that he'll do that which he loves would not make him feel bad - on the contrary, he'll even feel great.