Indeed. It depends on your needs, but for general enhancement, it can work wonders. That said, whatever you're working on, applying several passes of G'MIC may make the end result look better.
I guess it's just a matter of getting used to. As I said, when I started having an interest in graphics editing, it was Photoshop that I first used. I didn't even try GIMP until much later, and when I did, I had already grown accustomed to PS. I just couldn't get used to GIMP afterwards. Usually, I would want to do a specific function PS has, but I couldn't find its equivalent in GIMP, and then I'd get frustrated. Learning to use GIMP when you're already used to PS may be harder than learning GIMP when you've never used anything, just like how it can be hard for long-time Windows users to learn Linux.
I guess it's just a matter of getting used to. As I said, when I started having an interest in graphics editing, it was Photoshop that I first used. I didn't even try GIMP until much later, and when I did, I had already grown accustomed to PS. I just couldn't get used to GIMP afterwards. Usually, I would want to do a specific function PS has, but I couldn't find its equivalent in GIMP, and then I'd get frustrated. Learning to use GIMP when you're already used to PS may be harder than learning GIMP when you've never used anything, just like how it can be hard for long-time Windows users to learn Linux.