I used Arch for ~5 years on three different systems, so I'm pretty familiar with the installation process. My reason for leaving was two-fold:

• breakage, while infrequent, is annoying, and reverting isn't straightforward
• I wanted to run the same tools on my desktop as my server, and I didn't trust want to ruin Arch on my server

I needed to switch from FreeBSD to Linux on my server because I wanted to run docker containers, so I decided to try something different. OpenSUSE was the only realistic option that offered a stable server distro and a solid rolling desktop distro, so I switched my server to Leap and a year or so later switched my desktop to Tumbleweed.

Tumbleweed solves the first issue as well by running BTRFS by default on root with snapper configured. I've done a few rollbacks in the 3-4 years I've used it, and it's way better than trying to fix an Arch system with pacman. I could get the same effect with Arch, but most users aren't going to consider BTRFS or ZFS on root with Arch (I had BTRFS on /home on Arch, but that didn't help much).

I think Arch is a fine distro and I certainly recommend using it to those it makes sense for. I also think EndeavorOS is a fine way to get into it, though I do recommend installing it once using the standard test based installer to mostly get familiar with the tools (I've had to chroot to fix Arch). However, it's not my first recommendation, and I instead recommend Mint to anyone asking. I love Tumbleweed, but I'm not going to recommend any rolling release distro to someone unfamiliar with Linux. Release based distros break very rarely, and if they do, it's usually at release upgrade where it's expected, so mitigation isn't as important.

Anyway, I think I'll stop rambling now. In short, don't use Manjaro, use either Arch or EndeavorOS if you want rolling, or a release based distro if you don't.