JavaScript is literally the reason I would avoid a platform. It's only the de facto language for the web because you can't directly run any other language across different browsers. With web apps being so popular, having a low barrier to entry, and being "quicker" to provide half-assed cross platform apps, it's no wonder JavaScript is technically so popular. Hopefully, web assembly or something similar can change that. But then again, web browsers weren't meant to host proper applications.