More software development options give you more freedom to choose a path that gives the best solution to the problem you're trying to solve. That is "beautiful" for me. Software development in the real world is a game of trade-offs. You have time-to-market and various other business considerations to take into account. Many times, choosing the "best" technological solution will harm your business. What is best and beautiful depends on the wider context.

The killer feature of web is that there are at least 5 implementations from major vendors (Mozilla, Google, apple, Microsoft, Opera). Nothing else come close. I've been burned too many times before by discontinued products to use anything else for UI.

Funny thing is there's practically only Mozilla and Google left with their browsers. Microsoft, Apple and Opera all basically piggyback on the chrome renderer (prolly not entirely true for safari, but it doesn't run on anything besides apple anymore)

I consider not having to write an app in Swift/Metal/Whatever Apple crap and different app in Java/NDK/whatever Android crap to be pretty "beautiful".

That said, I use Xamarin instead of this.