Beleive it or not, I have some sympathy for the position that building something is harder and more important than tearing something down. My own namesake had that criticism of Thomas Paine. That said, people like Darin and I are hard-pressed to find a politician worth voting for.
I am willing to vote for someone who is a compromise on many issues (no one is perfect except me), in the hope that my vote goes to building a better country. For me, Obama really doesn't fit that mold. Maybe I could swallow the Drano and vote McCain but it won't be easy. I have an easier time voting my conscience and dropping a throwaway vote for a guy I agree with on more issues: Ron Paul.
If we all made less compromises, we might end up with fewer party shills and a handful of candidates with guts.