Yes emotions play into decision making

If you try to influence someone's emotions with your own, you'll probably just pizz them off. Unless you're a skilled politician or con man, then you can lie all day and half the night and get away with it.

For most of us facts and data are a better means of persuasion.

Also just because someone has different desires vis a vis a CBA doesn't mean they are wrong. Just different priorities... the union has to weigh member inputs and polling and strike the right balance.