(No provocation)
I see these reasons:
- newbie
- lazy (don’t wanna edit config files etc.)
- unique features (like assistant/toolbox, some optimizations like in cachyos)
- wanna check how different systems are set up (that’s rather distrohopping)
Personally, I used manjaro i3 when I was beigginer and wanted to see how tiling WM should be configured (check out ranger config, for example). But after some time, I don’t see reasons why not to just customize pure arch (same with debian and debian-based distros).
I used to use Arch, but I dropped it for CachyOS sometime last year. Cachy is just slightly faster for gaming for me, and since that’s my biggest use, there was no really compelling reason why I shouldn’t use it instead of Arch. Same experience, slightly better performance while gaming, and no additional work to set up. It’s just win after win.