Well for me, I prefer the way telegram has decided to handle end to end encryption. Let's face it - me and my friends have no use for it, and never will. Our threat model just doesn't really care about actors like the NSA hacking us. If they wanted there's tons of other ways to get our information any (like Google or Facebook accounts). But not being encrypted gives us features not possible otherwise, like url prefetching from the server or (when telegram was released, I guess it can be done now) accessing the chat from as many devices as you want. Yes, there is a tradeoff, but really I don't think most users are worried, nor should they be.