Everyone (well almost) wants a server-templated site or at the very least a functioning back button. No one wants to sit and wait for 3 million lines of JavaScript to parse and run with every press of the back button (and probably not even get to the same state as before!).

Yes, I know there are some stellar SPAs that actually work. But I can't see why they're necessary 97% of the time and it really bothers me when I see a SPA where one isn't needed that breaks basic functionality like back buttons and right-click and all that other jazz.