It all depends what you want to build. If you build a simple website, sure go with plain html/css/js. However, if you build something that needs let's say perfo

It all depends what you want to build. If you build a simple website, sure go with plain html/css/js. However, if you build something that needs let's say performant DOM updates, React or similar will give you that for free, and otherwise you'd have to develop and test it yourself.