Main reason I like the AUR is for really niche packages that aren’t in any main repos. Smaller github projects, forks of main projects that fix bugs, basically anything that you would otherwise have to compile from source is on the AUR. And while you still might have to compile it, it’s all setup and managed for you, which I really like.
Yeah if the AUR can stop me from having to compile even just one package from instructions on a github page (like with corectrl, which I also use lol), then it’s enough for me to keep using arch. I will say, AUR is in the normal arch repo I think? But there’s other packages I’ve used in the past that I can’t find in there, like specific versions of mangohud or gamescope, goverlay, etc.
AUR still means you gotta compile sometimes, but it’s so much less of a hassle to just search the AUR and hit go then to mess around compiling something manually.