It's there for ALL other professions, at least in my country.
The problem is that admitting it puts you at a significant disadvantage at debates. If you can no longer summon the (self-)righteous fury your opponent can, not only are you more likely to give in from sheer exhaustion, but people viewing the debate are likely to consider your opponent as dominant and confuse that as being right.
This is why I hate debates. It's not the person who is right who wins, it's the one who flings the poo the farthest. I was aghast to discover those 'debate competitions' in US schools: pick a subject and 2 people, one has to debate pro, the other against. And fuck the truth, let's just get ready to form another generation of lawyers and politicians.