Is worth using a client-side framework to make a simple website look like an app?

I'm building a simple website. With simple I mean just a regular site, DB powered, with views of 2 or 3 models, an admin section.

My idea was using React.js to make the entire frontend. It's not necessary, but the purpose was to make it responsive (in time, not display size) and make it feel quick like an app.

Is worth it? Or I just simply use server-side templates?

Could we list some advantages and disadvantages?