¿Quieres que hable con él? - No, no vale la pena. No cambiaría nada.Do you want me to talk to him? - No, it's not worth it. It wouldn't change anything.
Podríamos presentar una queja en el departamento de atención al cliente, pero no vale la pena.We could make a complaint at the customer service department, but it's not worth the trouble.
d.
Una frase idiomatica cuyo significado no es deducible si se traduce palabra por palabra.
Yo creo que no vale la pena ir hasta el museo para estar allí solo media hora.I don't think it's worth going all the way to the museum to be there only for half an hour.
El libro es estupendo, pero la película no vale la pena.The book is great, but the movie is not worth seeing.