I like how easy it is to create pages, sections etc with its drag & drop feature which makes everything very simple for my clients who are not technical at all.
It's also free so there really isn't anything that i dislike about this program as far as features go! The only thing that can be improved would have been if you could use plugins in order to expand what functionality they offer but other than that we've had no issues using grav thus far! We're creating websites and ecommerce stores mainly geared towards small businesses (think handmade goods) where our clientele want something super user friendly. This has made things much easier because of their ease of navigation through the site as well as having quick access/editing options when working remotely or over video chat via zoom.