It’s not about trusting you, you’re probably an honest person who does great work. The issue is with using a child to do work. This may not be a problem in developing or third world countries but people in the Developed World should have higher standards and not use children to do work.
Nobody will be “using” me to get their work done, I will do that because I want and not be doing it for free. Everybody should get a chance. I want to do something in an early age. You can also call me a teen.