I deploy my React apps and landing pages there and don't need to worry about the underlying compute, or load balancing, or anything else. Thankfully I didn't do any frontend work before Netlify was available!
I don't really get all the hype around the Jamstack (https://jamstack.org/), though.
Netlify's hypothesis seems to be that if you deploy websites on CDNs, instead of on web servers, then you'll get better performance.
Also, because it's just a static site, there's no backend or database, so you get better security.
I accept this hypothesis, but it seems like you still need a backend. Netlify is promoting functions as a service [1] so you can avoid having web servers for the backend too, but I'm a little skeptical you get the flexibility to build applications with dependencies or non-trivial business logic or design with this approach.
If anyone's tried a FaaS and this is incorrect, please describe your experience!