People want responsive interfaces, absolutely. Whether the interface is implemented as full page requests to servers or AJAX requests is irrelevant to users.
Bare AJAX itself almost always will perform better than a full page request, but as you layer on additional requirements, frameworks, libraries, etc. that isn't always true.
I think old reddit and new reddit are a great example of this - both are processing the same data and presenting a very similar UX. But at least for me, the relatively javascript light old reddit interface with full page reloads feels much more responsive and usable than the new site.
Bare AJAX itself almost always will perform better than a full page request, but as you layer on additional requirements, frameworks, libraries, etc. that isn't always true.
I think old reddit and new reddit are a great example of this - both are processing the same data and presenting a very similar UX. But at least for me, the relatively javascript light old reddit interface with full page reloads feels much more responsive and usable than the new site.