I just found the actions of the law firm, which admittedly does a distasteful job, reprehensible. I can't imagine how any Christian in good conscience could work there. Maybe none do.
It is hard to understand. The only thing I can think of is the familiarity breeds contempt, in the way some police or nurses get hardened to the people they deal with all the time.
That is the only “excuse” I could think of, and it isn’t much of one. Working in that industry can’t be all that much fun.
I work in health care, and I get a lot of job satisfaction out of knowing if I work hard at my job, it improves the care we give our patients.
I can’t imagine they get anything like that in their jobs.