I run my site on Gatsby. It's easy for me to write some markdown, push it to github, and have netlify put it online automatically.

At one point I moved it all to custom software that ran on AWS, and it was 10x harder to write anything so I gave up and moved back to Gatsby.

I don't even like Gatsby, I think it's total overkill. That said, It makes it easy for me to run the site, and that's actually what I care about.