I could understand it if...
...he actually offered any alternatives at all to any of the above stated problems. Instead, he has basically taken the ball and gone home, and refused to even offer any alternatives in most cases.
Korea: Trust me, it's Bad. "Rogue" state that would love to get it's hands on a nuke or 15, backed by China, with massive starvation problems exacerbated by a very corrupt central government with a strong army. Not a real threat to the U.S. in the sense of being able to directly attack us, but if they go wild, they could screw up Asia before we could do much about it. Note that they have theatre missile capacity - they launched a missile over Japan not too long ago. Combine that with several suspected nuke programs, and they look a lot more scary than Iraq ever did. That, and China backs them.
Defensive Arms Race: I'd love it too - but I'm not worried that it will spark a defensive arms race - I'm worried it will spark an OFFENSIVE arms race, as U.S. detractors attempt to invent decoy equipment that can evade our defensive measures.
Kyoto: It's okay to disagree with people. It's ok to admit that Congress might not even pass it. It's not okay to throw everything out the window because your oil buddies don't want it to happen, which is pretty much the noise that's been coming out of the White House, as opposed to any serious conversation on the issue. I'm doing what I can too - my next car will be a Toyota Prius, hell, we might even get two. (BTW, I test-drove one - nice car! A little noisy at high speeds, but there are no power issues at all with them.) When I finally get a lawn, I will use a manual mower, not electric or gas. Good exercise, too.
Bacteriological Warfare: You're right, it's probably not enforceable. It's also better than nothing IMO - it's a stepping stone to the next agreement which will go further, etc.
What I'm upset about is that Shrub isn't just backing away - he's actively throwing stuff out the window and not offering anything in it's place.
