Why do you think so many people say, "move on" as if it were as easy as testing a bed?

There are a lot of questions on fluther about whether someone should stay with their boyfriend or girlfriend. When you ask a question like that, you can bet that a large number of the answers will be “move on.” Little—if anything—more.

Saying “move on” like that implies that there is nothing to stop you from easily moving on. It’s as if you can drop someone that you are very attached to just like that. It totally ignores the difficulties in breaking strong emotional attachments, and as such, I think it does not actually answer the question. It seems to me that it’s more like a quip than real advice. Short and pithy; a snap judgment spoken with authority—but for what purpose? I don’t see how it could be about being helpful.

Move on? Sure. But how? How many people address that issue—how to move on? Do any? Why do you think people believe it is helpful to say, “move on?” Why do you think people don’t address the issue of difficulty in moving on?