If I were interviewing Bob, and he told me that he left because he felt morally uncomfortable with the job, he would earn considerable respect from me. In this

If I were interviewing Bob, and he told me that he left because he felt morally uncomfortable with the job, he would earn considerable respect from me. In this case, it would not be a barrier to hiring, and in fact I would be glad to have someone on staff who is principled in such a manner.