Can a person be rational perpetually? If so, what are the hurdles that must be overcome? Does the practice reduce one's humanity?
On a personal note, I strive to be completely rational at all times. I have yet to come across a situation in which logic and reason do not serve me at least as well as, and more often better than an emotional response.
That doesn't mean one can't enjoy a good bit of music, or a vapid summer blockbuster. An emotional reaction isn't irrational - it's when that reaction fuels action that it becomes so. Further, not every emotional reaction is inherently irrational, but they are inherently unreliably effective, productive or considerate.
How pervasive is rational thought in your life? Why to that degree? Are you happy that way, or striving for change within yourself?