Only do it when you are independently wealthy or are a tattoo artist yourself. Otherwise you severly limit your chances of future employment. 
Rightly so. Anyone who would do such a thing to themselves had, at one time, some significant mental issues which manifested themselves in an identity crisis of one sort or another, and God knows what else. These kinds of issues might recede but one has to suspect that they will crop up again from time to time.
Lots of people, and especially people who have it together enough to have the resource to support an employee, are going to find it weird that someone in a modern culture would maim themselves. I don't assume that someone who does weird shit to their bodies is necessarily a bad or unreliable person, but if there are options, why take the chance?
