MedMech,
You think there's nothing worse than a Bible thumper with an agenda?
How about----
an environmentalist with an agenda?
an anti-gun rights nazi with an agenda?
an anti SUV crusader with an agenda?
PETA people?
big, (and bigger) government do-gooders who want to legislate your life?

the list could go on, but you get the idea. There are many people at least as scary as Christians. The problem is not their beliefs; its the idea that THEY have the right, or obligation to run your life.