Regular ass HTML and CSS works just as well as ever. Application frameworks solve problems that are convincing at hyper-giga Google scale (where an infinite number of participants and data models need to be consolidated) that aren't as important when I am trying to display words, pictures, and video to people across the world. For instance, if you're talking about advanced sharding, granular caches per data-field, or scaling microservices with the load on different parts of your application, then maybe you need something more complicated.
I like simple, and I like to be able to see changes I make in real time. React makes a lot of things more simple, so I use it often.
In middle school, a buddy of mine drew a beautiful picture of a Bugatti Veyron with a silver Pilot Dr. Grip Ltd. shaker pencil and I was so enamored by his drawing and his pencil. He spent weeks getting the details just right during downtime in math class.
It got me interested in stationary ever since then, and I've always loved JetPens. I've gone through phases where I really like mechanical pencils, although I mostly write with Uni Signo UM-151 0.38mm gel pens. Super smooth with a crisp, fine line.
JetPens is a great site with a very cool niche. Check out Kinokuniya too. There's one in Little Tokyo in LA. Lots of pens, pencils, notebooks, and all sorts of books and manga.
Mobile is about discoverability and money. iOS users are more willing to pay for apps than any other platform, and every established business wants an app so they can be on more devices.
We've done real-time JavaScript UIs for several projects where the hardware is slick enough to host a REST API or a WebSockets server. It's worked well, making it easy to access devices from a kiosk browser or remotely. It also enables communication between devices across the same API layer, and by decoupling the UI from the application and control planes, it allows us to iterate super quickly with familiar tools.
I like simple, and I like to be able to see changes I make in real time. React makes a lot of things more simple, so I use it often.