I agree that every single time a presidential election comes around, one hears, "you gotta vote this way, we could lose America" and things like that.
But at the same time, I do think there are rights in jeopardy, freedom of religion, 2nd amendment, huge demographic shifts that are at least something to be considered.
Otherwise, I don't go in for the usual "fear-mongering" in that sense but the argument nonetheless, has valid points, I couldn't conceive that gay marriage would have been in the USA even 5 years ago.