[Immortalin]

Because most cross-platform desktop GUI kits are terrible. Everything that's not paid requires a lot of fiddling with C++ bindings and obscure build scripts. Electron is built on Chrome which has billions of dollars backing it. If you want something that's easy to use (and not having to spend too much time thinking about license compliance), looks pretty and works well, your options are pretty limited. Say what you must about Google and profiting from ads but electron is one of the only few full-featured GUI frameworks that allows for simple statically linked app distribution. For free.