I moved my blog from WordPress to Jekyll too. Not much about the "beautiful" part but it definitely is simpler, much easier to maintain, and the writing has been cleaner. I also made the Jekyll theme available for anyone to try it out.
I moved my blog from Wordpress to just a static html/css site that I maintain myself, including the rss xml. It's certainly simpler and I've learned a great deal but maintaining even a personal website this way can be a pain (it's far too easy to not catch a typo and breaking something like rss). Jekyll is likely what I may end up switching to.
The content I interact with is plain-text (Markdown). I use Jekyll just as a tool. I have tried Hugo and way faster locally. However, Github Pages has Jekyll built-in and so I stayed with it. I rarely run Jekyll locally to write.
https://brajeshwar.com/2021/brajeshwar.com-2021/