More on Psychological Solidarity

In the exposition of why the Second Person of the Most Holy Trinity became man, some will talk about how it was so that the Word would have psychological solidarity with us, feeling and experiencing pain, suffering, and death as we do. This is in contrast to the knowledge God would have of such things as cause -- what is important here is the "subjectivity." But is this really such a good reason? Are human beings such "special snowflakes" that God the Son must experience "human subjectivity" to become one of us? Or does God the Son become man not so that he can be accounted one of us, not as fallen but experiencing the consequences of original sin nonetheless, but so that He might elevate us to the divine? (After all, if we accept that subjectivity is important, why can we not say that Christ must experience temptation as we do, that is in a way that involves disordered appetite, in order to be one of us?)