What reasons did US abolitionists have for objecting to slavery?

Abolitionism in the United States was an expression of moralism, and frequently had a religious component to it: slavery was incompatible with Christianity, according to the many religious abolitionists. It often operated in tandem with another social reform effort, the temperance movement.

the difference is that white collar worker performs skills like worker as a scientist or well blue collars do physical work and they do services like being a cook.