If you can let me play armchair psychiatrist for a bit, what does it say about a person when they WILLINGLY sell the most private part of your body for money? For some it suggests that the person is desperate for attention or is so desparate for money that they are willing to become shameless. This suggests that the person is rather impulsive, and thus not very stable. What employer would want a potentially unstable employee that could bring really bad press to their business, and thus lose the business money?
That is why idubbbz arguement is rather dumb. Sure it is morally right to not judge a person's past but it is also, potentially, economically dangerous which could fuck over other employees and the business as a whole.