(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 taught myself how to properly configure things on Linux using EndeavourOS but ended up sticking with it because there is no real reason for me to switch to pure arch. On my laptop I have NixOS and occasionally notice some of the disadvantages of having not having things pre-installed.