I didn’t know this for a long while when distro hopping and since every distro tinkered with grub etc and I really hated debugging grub, and I was afraid of something happening to my home directory, I overwrote it every single time. I wish I have had a separate drive just for it when I began with linux.
Fedora has images which you can create yourself as an enduser which means a corporation with thousands of computers can create their own image. They don’t have to create a new distro. That’s not possible with suse but I don’t know if that’s so important since I do not administer such things. I as an enduser do not care about the underlying system, I don’t tinker with it, I rarely touch it. That’s the case for both distros. I may install a vpn or so.
If you want to tinker with your system, neither fedora nor suse are good for that, using arch is the way to go.
What if you just use distrobox in the future? You can use debian/ubuntu with it on whatever system you use. On my fedora silverblue installation almost everything is seperated from the OS. I barely touch the OS. It doesn’t really matter if I’m on silverblue, microos or vanillaos. I want to switch to microos because it comes with firefox as a flatpak ootb and other minor things. It’s jist not worth it anymore to switch the distro