Is hope like a silent killer? We put so much into it? How much of present pain do we go through with the hope of a better future?

Is being hopeful is like becoming illogical? Is hope or expectation the same?

As far as I know, it hurts a lot when our expectations are unmet. In the case of hope, it is a mythical creature without any existence.

Are we giving up too much now for the hope of a better future?