Fame
While nobody's really going to know your name, you could be interpreting for some pretty famous people. This lucky lady got to interpret for Bob Geldhoff at the UN (never mind folks like the Presidents and Secretaries of State that were probably listening in, too. But can they sing "Comfortably Numb" in key?).
Who knows—you could even find yourself translating for Brad Pitt and Angelina Jolie on one of their many trips abroad. Maybe they'll even adopt you...if you're good enough.