Hipsters . . . lack of coats

Okay. I understand that global warming is taking place and that winter is pretty mild compared to those faced by people on the Oregon Trail. And on the Oregon trail that had some rags and corn tusk to wrap themselves in so they froze to death. HOWEVER, why do hipsters find it necessary not to wear coats in the the winter? I would first assume it is because they cannot afford it, but they are paying for overpriced converted loft space in Williamsburg. Then I thought it is because they might not be cold, but they weight only about 75lbs (wet) and have no body fat. So the only logical answer to why they dont wear coats is because they are fucking aholes. . . . that has to be it. So the next time it is twenty degrees on the subway and you see a hipster wearing nothing but a spring jacket and leggins please make sure to call them out on it . . .