Not exactly. More like, "The world can suck major at times, so we should make sure kids are prepared to deal with it when confronted." It's kinda like teaching kids to look both ways when crossing the street. Ideally, drivers are looking out for pedestrians, but if that doesn't happen and a pedestrian isn't prepared for it, well, people can get killed.

No one should be ashamed for teaching their kids to exist in a world that isn't always as loving as we all wish it was.