FWIW, Angular 2 will ultimately be a lot smaller than React - the Angular team seems to believe they can get the core library (similar to React in pure components, but allowing the user to access the AST itself for more flexibility for custom rendering engines for different platforms with less overhead) to under 10 KB minified &amp; gzipped.<p>This is probably since the dependency injection, router, http, web worker, service worker, and testing modules will be properly split off at some point, as well as the polyfills. That leaves the necessary polyfills as zone.js (as of a couple of days ago a presented Stage 0 proposal), rx.js (the ES7 Observables proposal), reflect-metadata (ES7 decorator proposal), &amp; an ES6 shim, and the necessary non-polyfill dependency of DI - all of these are pretty light.<p>Otherwise, I pretty much agree with the benefits of choosing a popular library&#x2F;framework. The homebrewed HTML generation in the original article was quite painful to read, and if all someone is interested in is to figure out the HTML structure and how CSS interplays with it to style it appropriately, this pattern will fail fast. Angular, Ember, and React (or whatever popular&#x2F;semi-popular library&#x2F;framework) allow for much better template expression than this.<p>In addition, typing out all of that is tedious - repeating stuff like document.createElement every time will get old fast. One will then want to create a custom HTML rendering method that generates the appropriate DOM node depending on the string passed to the function. Then one will start trying to figure out optimizations since it turns out raw DOM generation&#x2F;manipulation has surprising performance issues in some situations...at which point, one encounters what Angular 2, React, and virtual-dom have all encountered &amp; largely solved. This doesn&#x27;t even get into various other optimizations, such as using document.createDocumentFragment, creating a caching strategy, avoiding unnecessary node generation, etc., or writing the components such that they cannot be optimized by leveraging web workers.<p>It may be a fun academic exercise to create a rendering library, but in practice it is difficult to create a robust solution, especially one that works for a team. Doing a rough cost-benefit analysis, this path is seldom a fruitful use of one&#x27;s time, unless one enjoys such forays &amp; solving these problems.