Very silly answers:
1.) For one, he's got one foot in the grave and another on a banana peel
2.) He's against war. The fact is: if we don't invade countries like Afghanistan and Yemen, they will invade us.
3.) For starters, you know all that cleanup along the east coast? Good luck, no help from the feds.
4.) 1. Economics: He is for ending the Federal Reserve and returning to the Gold-Standard.
5.) 2. Foreign policy. Ron Paul is an isolationist.
6.) Ron Paul is a conspiracy theorist and extremist who doesn't understand monetary policy or fiscal policy, who is probably a racist, and who is not a socially liberal libertarian but rather an old-school paleoconservative.
Ugh. Makes you want to bang your head against the wall...