I used to be a Tailwind hater. I couldn't fathom why anyone would ever use it. And then I used it. It seriously makes CSS significantly easier to maintain, dramatically reduces your CSS build size, and is really good for teams if you're trying to use consistent CSS throughout your UIs. You also don't need to go back and forth between CSS file and HTML file. If you're on the fence, try it out. I think it's the future…
If you're using a component-based architecture (e.g. when using React, Vue or Angular), otherwise it can get pretty annoying. But if you do, it's pretty great; you don't really need the abstraction of reusable classes, when you already have reusable components, and getting rid of useless abstractions makes me a happy programmer.
Also, I'd go so far as to say that if you're not using a component based architecture for your web app's view layer, you're creating a ton of extra work for yourself.