This is sort of a compilation of things I have heard:
Too many distros to choose from and I tried a couple of the ones that were supposed to be good for new users, but had issues that I found too annoying to ignore. And when I tried to get help online, I got rude responses from Linux users who just seemed to assume that I was a young guy that ought to learn how to code and fix my own problems (I am not young and I will never be a coder) or accused me of wanting to be "spoon fed" the answer (yes I do, and exactly what is wrong with that? When I ask a question in an Apple-related forum people there have no problem just giving me an answer if they have one!). So I turned to AI for answers so that I didn't get all that attitude, and AI is great when it gives you correct answers but very often it just made shit up, and it's hard to tell if it's giving you a correct answer or hallucinating. And even an AI doesn't know everything, not yet anyway.
I live in a rural area and there are no local sources of help that I'm aware of, and definitely no Linux user groups if those are even still a thing now, but even if there are, if they were using a different distribution than whatever I am trying to run they probably couldn't help much.
Oh, and I absolutely hate typing stuff at a command prompt, I may do it occasionally to fix some weird issue (assuming someone else tells me what to type) but all the normal stuff should be doable using a GUI app. My Macintosh hardly ever asks me to type anything at the command line and that is how I like it! I am a computer USER, not a programmer, not a coder, not someone who wants to spend a great deal of time "learning" a new operating system. I want to be able to turn the computer on, read my email, browse the web, watch YouTube videos, type and print the occasional letter, save and view/play my photos and music, etc and not have the operating system get in my way, or force me to try to learn how it works internally.
And the final reason is that only Linux users still seem to think that reading a bunch of documentation is a prerequisite to using a computer, I have yet to see one good video that explains to someone that has never used Linux before how to use it (an "explain like I'm 5 - or 10 - and this is my first ever experience with a desktop computer that happens to be running Linux" type video). It is wonderful that so much random documentation exist but hardly anyone is going to just start reading it as if it were an instruction manual on how to build a garden shed, and even if they tried, anyone that doesn't have a photographic memory will quickly forget everything they've read because so much of it makes no sense at all to anyone who is not already very experienced with Linux. Nor will they remember all the options associated with various Linux commands that are typically shown in such documentation.
Like I said, kind of a compilation of things I have read or heard, and I didn't even get into the gaming stuff because I'm not personally into that and therefore don't really understand the issues there.