You are right.
Cal says: Do evangelicals have time on their hands because they've finished the mission to "go and make disciples of all nations"?
So what about him? Isn't he an evangelical? Why is he writing a column about politics? Is he helping the cause of the gospel by bashing Christians repeatedly? I don't think he is advancing the gospel one bit. He should practice what he is preaching first.
Show us by example, Cal.
John 18:36
"Jesus answered, My kingdom is not of this world: if my kingdom were of this world, then would my servants fight, that I should not be delivered to the Jews: but now is my kingdom not from hence."
Quoted From:
http://www.bbie.org/WrestedScriptures/A07ChurchofChrist/John18v36.html
The Church of Christ interprets this verse to mean that Christ's kingdom has nothing to do with him reigning from David's throne on the earth, but is rather a spiritual kingdom operating through the "church" since Pentecost.
While this is a citation from a Morman site your question of stewardship is very pertinent.
When Christ said his kingdom was not of this world, he meant that Christians should be indifferent to the secular or natural world.
He did not mean that as a license to willfully destroy that which God had created.
To say that it is perfectly fine to leave the world in ruin because the end is near is blasphemous, bad manners and dreadfully poor housekeeping. IMHO