>why would I not recommend it ?

You're free to recommend it, but if you tell somebody coming from a Mac that GIMP is an alterantive to tools like like Affinity Photo, Pixelmator, Acorn, or even Photoshop, you're doing them a disservice, because it's not.

I'm glad that GIMP works for you. That's good. And technically, it probably does a lot (or even everthing) that most people do in other applications. And maybe you can even argue that it doesn't do those things worse, it just does them differently.

But the reality is that if you're used to a tool like Acorn on the Mac, which puts a huge priority on providing a good, efficient user experience, you're just never going to switch to GIMP.

Same applies to a tool like OmniGraffle. I've looked everywhere, there's nothing like OmniGraffle on Linux. By that, I don't mean that there aren't any tools that allow you to create diagrams and mockups, I mean there aren't any tools that are as nice, simple, and quick to use as OmniGraffle.

> It does everything I want to, and more.

So does ms paint for a large part of computer users. Not sure that's a good enough argument.

I've been using GIMP for 20 years now, but the UI is atrocious; you can tell it's been designed by engineers who know nothing about UX.

Even the most basic UI elements, such as the slider bars, are horrible and unusable.