Well how boring would it be if the best team always won? And many teams see it as a trophy to have won against a great team. If that is the only thing some teams can take from it all it may still be worth it for them. And i just think its great that no team has such a thing as an "free" win.
The point is that they *are* making the right decision. They are keeping their team in the competition by any means possible, even if it just means that they'll be useless in the rest of the competition.