The mystery of the DIVISION OF LABOR in capitalist society

In all countries CAPITALISM is based on the exhaustive and exhausting EXPLOITATION of the working class. Most of the time working class people hate their jobs and can't wait to retire. In capitalist USA the bottom retirement age for collecting social security is still 62. While life expectancy is declining ! In general, the rigid DIVISION OF LABOR itself tends to create a economic caste system. How many mentally healthy individuals really are content to do some one thing -no matter how well paid - for 20, 30, 40 years ? Consider an aging but still excellent dentist reflecting : " Do I really want to look at rotten teeth for another five years ! " . Yet , we expect that there is a dentist to see when a tooth aches , a plumber to call when the toilet won't flush , firemen to call when your house is on fire, public school teachers to be there for your children's compulsory education . Can this necessary DIVISION OF LABOR in any economy possibly come about by individual FREE WILL ? Every kid will be asked some time : " And what do you want to be when you grow up ? " . ( no kid thinks " I want to be a convicted criminal " or " I want to be an unemployed homeless bum " ) HOW can individual CHOICE possibly guarantee the necessary division of labor in a civilized society ? Whatever , I am always glad to see the garbage men twice a week at Randal Manor in Cranston, Rhode Island. When does human FREEDOM really become possible ?