People have a lot of expectations for themselves and for their children before they actually have children. In many cases, they will fail to meet those expectations for reasons that are largely beyond their control. This video does a good job of dramatizing this phenomenon. The parents in the video will talk about how things are going to be when they give birth, and then the video will show them failing to go through with that plan at a later date.
Parents in real life will usually have to learn these lessons the hard way, so watching videos like this from the perspective of more experienced parents may be able to prepare them for the realities of parenthood a little bit more. Plenty of people all over Facebook would love this video, especially if they have kids or if they are planning on having kids at some point in the future.