Well, there are reasons and it's getting more common. In fact most modern browsers, even on a smartphone, may have more computing power than a server if you con

Well, there are reasons and it's getting more common. In fact most modern browsers, even on a smartphone, may have more computing power than a server if you consider that the client has only to serve itself and the good performance of modern JavaScript engines. And having to do a lot of networking with a server slows a lot too, since network is one of the slowest and unreliable parts of an app. So your answer sounds more like an excuse than a solution to me, sorry.