I just don't like the bidirectional data binding that vue seems to bring with it... I've had enough experience with this in Angular at this point to know that it's painful... then the easiest way around those issues is to use classes, and computed property getters and setters. In the end, it's just painful.

React is much clearer here, but there is more of a cognitive load in getting used to it, there's less magic at the surface. Even combining with something like Redux, or even MobX has another layer of understanding... routing and server-side rendering more still.. but they are layers you learn and add, not everything in one neat package.

I'm also not a fan of the custom DSLs that tend to come with templating engines.