[chr15m]

Thanks for your feedback! I agree, WhatsApp is an amazing piece of software with a great user interface & UX.

There are significant computer science challenges when building peer-to-peer software that are much easier to solve when building a centralized system. This may be the reason that people seem to "brag" when they create something p2p - because it is difficult to do - and it may also be the reason why there has not been in your opinion "a killer p2p chat app" yet.

One great thing about WebTorrent is that it makes building p2p software for the web much easier. They have done a great job!