It's not putting your stamp of approval. Imagine a school bully coming up to you and saying, "Would you rather me punch you in the face or in the stomach?" Saying "I don't want either" means he's going to be the one picking. Going with the punch in the stomach doesn't mean you actively want him to punch you in the stomach, it just means you don't want to get punched in the face. When those are the only options, you should probably pick the better one.