You are not the you , you think you are.
You get to escape your own reality, travel to the oppressed who can not escape their oppression and you have the audacity to feel the need to help? help yourself, why did u escape your own reality if it was so great?
Through this concept of helping “the other” you aim to get some confidence and gain some power, so when you go back to your normal life, you feel better again. The thought of child workers that made your iPhone does not taunt you at least not for a while, because you reassured yourself you are not bad, you did some good. Do you see it? you are the oppressor and the oppressed, open your eyes.