We tend to look at others' bodies with longing. We view them as perfect or at least better than our own. This is because we are looking at their body as a whole without a bias towards negativity and in general the whole is mainly positive. We see other people’s bodies are wonderful because they are wonderful, all bodies are, including ours. When our vision is clouded by the negativity bias, we are unable to see our own beauty. But just because you can't see something doesn't mean it doesn't exist.