Should the U.S. Promote Democracy Abroad?

The basic principals of Democracy are great; people get to vote, the citizens are in control of the country and rules will be followed to make sure the country is being treated fairly. However, if the United States is going to promote Democracy, then we must make sure we don't have more countries than we can handle. Many other types of government eye certain countries and would like to put in their type of government. This will cause many fights between those who are Democratic and those who are in the "neutral" countries trying to set up a governmental structure. While they are vulnerable, who will "watch them"? Are they signing their death wish?