trap of reasonableness

I like Obama's reasonableness. It's a good quality to have in a friend, a parent, or teacher. I'm not as convinced that reasonableness is a quality that prepares one for a full encounter with the world. In my opinion the world is not reasonable, thus religions (however extreme) are in a odd way more attuned to the nature of the capricious universe than reason. We wish it were not so, but it is. A reasonable person always wants to talk things through, believes in educating more sins, crimes and character defects away. Sometimes reasonable people are capable of firm and decisive (disciplinary) actions, but they are reluctant to deliver it and feel as if in some way their reasonableness has failed them if it comes to this.
The "unreasonable" conservative Christian has much in common with the unreasonable Muslim. There are subtle differences in their inspiring (revealed) sources, and more importantly differences in the amount of time their unreasonable philosophy has had to bump up against other philosophies and inevitably made more reasonable compromises. People have said this before, but a big issue with extreme Islam is that is it a
"young" religion (1300 years vs Christianity's 2000 years or vs Judeo-Christianity's 5000+). Still, 1300 years is a long time. But take 700 years off Christianity and we're in the age of the Inquisition, with decades of religious wars to follow. Christians still fight (Northern Ireland) but few would argue it's over the finer points of doctrine versus class, ownership, patriotism and generally transmitting grudges through education.