I've been involved in projects which were teetering on the edge of my ethical boundaries, knowing full-well they would/could easily be abused... but I knew if I

I've been involved in projects which were teetering on the edge of my ethical boundaries, knowing full-well they would/could easily be abused... but I knew if I didn't do it, I would lose/quit my job and then somebody else would just do the project. Even if say, 90% of programmers turned the job down, there are enough hungry people in the world who would gladly do the job in order to feed their family/buy a lambo/etc., regardless of ethical implications.