In my small fourth grade class of 20 students, we are learning how to write essays, and get to pick our own thesis statements. One kid, who had a younger sibling, picked the thesis statement: "Being an older sibling is hard." Another kid did "Being the youngest child is hard." Yet another did "Being the middle child is hard", and someone else did "Being an only child is hard." I find this as a rather humorous example of how people often make it look like they're being oppressed.

Does anyone know why people do this?