I think you sum it up perfectly with your last phrase:

But if you try to understand emotions, or you get emotional about being rational (it happens) you are just missing the point. Being human is tough some times.

There can be occasions in which the intensity of what we feel and the complexity of our thoughts might be too much, which can cause us frustration, but either way, in the end, its up to us how we read into things and how we react based on that