Here’s my problem with extremism, left/right, religious, or whatever: when you look at physics and nature, systems that are in balance are the ones that work and survive.  Extreme states are rare and usually transient.  Now of course, you cannot draw exact parallels between hard science and social science, but it’s certainly the best place to start, as humans are physical beings and are part of nature.  But balance ain’t too passionate and it’s hard to get excited about it!