Picking this of similar posts to ask: why? Not criticizing, genuinely curious what about the iPad appeals to you so much more than the Mac.
I suppose it depends on the kind of work / leisure you do on it, but for me the Mac is better in every sense except extreme portability. As you say, the software hinders so much, and at this point there seems so little reason for it.
So is it touch that is the appeal, or what is it that makes you want to replace a presumably stationary Mac setup with an iPad?
For me, it’s a combination of the tablet form factor plus touch-optimised apps simply being more fun and enjoyable to use.
I want to be clear that the ipad does not replace my Mac (or a conventional PC for that matter), but at the same time, the PC doesn’t replace my ipad either. Each has its place, but in terms of sheer number of hours of usage, the ipad trounces my MacBook Air.
Much criticism is levelled at iOS apps being “baby apps” compared to their full-fledged desktop equivalents, and sometimes, a simplified UI and functionality is just what I need, especially if it results in less bloat and complexity. When I am teaching in the classroom, all I need Notability to do is organise my pdf documents, and let me annotate on them. No muss, no fuss.
If I want to read, stream content or do light gaming on the sofa, the ipad is the ideal form factor. Twitch in the browser has more functionality, no doubt (including the ability to manage my prime sub), and the UI is also far busier. The mobile apps tend to strip out a lot of distraction and put the focus solely on viewing.
Right now, I am typing this response in Tapatalk on my ipad, with youtube open in split-screen mode.
I get enough use out of my ipad that I upgraded to the M4 ipad this year, and there will always be a place for the best ipad that Apple has to offer when time comes to upgrade.