Eh, to each his own. You've been around, TFM, you know that every board has a variety of posters interested in a variety of topics and everyone has an opinion on everything. What you might consider a conspiracy theory (talking about the various Mexican and American destruction threads), someone else might find disturbingly real. As long as the topics and postings stay within the guidelilnes, there's no harm being done.
By the way, America was destroyed in 1950 last night in war with Egypt in a rowdy game of Civilization IV between me and 3 of my kids, who are all Civ nuts.