Comment by hegelstoleit

You missed the point.

> Just because someone else might be willing to do it isn't a reason to continue doing it.

Hence, someone filling the position after you leave isn't a reason to continue doing it, whereas the fact that it's an immoral thing to do is a reason to stop doing it.

Someone filling the position after you leave has no bearing on the reasons that are relevant to what you ought to do here. It's like deciding to not buy a ticket to see a movie because someone else is going to buy the ticket anyways even if you don't purchase the ticket. It has no relevance to whether you should watch the movie or not, just as someone else taking the job has no relevance to whether you ought to do the job.