First, they did order the steak. You don't end up pregnant with a child just randomly on Thursdays. If you hop in bed and have sex with someone, you are ordering the child.
The correct Pro-Choice version of this cartoon, is they order steak get the steak, and the refuse to pay for it, because they don't want to take responsibility for their choices.
By that logic, any group of people we don't want to take care of, we should be able to murder, like an unwanted baby.
And most importantly of all, we want that child to grow up in a world where innocent life is actually protected, rather than killed for convenience of the irresponsible left-wingers.