We hate being told we must be saints or angels, because we’re doing something really ordinary and normal – that is, taking care of kids in need. If some children showed up dirty and hungry and needing a safe place on your doorstep, you’d care for them too – we just signed up to be the doorstep they arrive at. The idea of sainthood makes it impossible for ordinary people to do this – and the truth is the world needs more ordinary, human foster parents. This also stinks because if we’re saints and angels, we can’t ever be jerks or human or need help, and that’s bad, because sometimes this is hard.
Source: Casaubon’s Book.