Job: name of thy evil

Well, I know job is not a bad thing as such but then why do I don't find anyone who is really happy with his/her job. In my friend circle, even those who joined with their favourite work and outstanding salaries, have got bored of there jobs and looking for new challenging opportunities.
Others, are thoroughly frustrated that the job is not what they like to do or their boss or amount of work or something else. Why is it so difficult to be satisfied in a job? There are some people for whom work is the only good thing about their job, their salary is low, company culture is bad, etc. etc.
Some may blame dissatisfaction to human nature of always asking more, but is that really the reason? It may be the small part but not certainly the main reason. The way jobs are designed in most organizations make them boring. By very nature, most jobs are boring. I know I am making very strong statement but that's what I feel when I see around. Only people who seem to be happy are those who are extraordinary enough that they can progress fast enough so that they are on new challenges before they get bored with the old things. By very design is job is for a particular set of activities and when a person as identified and established for that job keep doing the same or expected to do the same, that being his recognised competency.
Though one might say this is how it is there from ages of human existence, I feel it is not so. Simply because though one has expertise in only one area how to handle that area has entirely left to the person, and like for everything decisions were in his hand. This act of taking decisions in all kinds of situations is often what gives satisfaction of facing challenges. Though there is nice theory of empowerment in Industry (at least in manufacturing industry) it is often seen that the constraints put on employees in terms of directives and process guidelines are such that the empowerment has absolutely no meaning. Most people hate doing same things over and over again and jobs seems to stress on that aspect very strongly.
We need jobs which consider human oriented approach. We need to wake up and do something about it. The arguments here are not yet complete but will come up with more thoughts at some later time.