Well, mainly I was young and still exploring a fresh and vibrant scene (much unlike the relatively mature Linux of today), so that was half of it.
The other half was that whenever I searched for an RPM for something I needed, it was almost always a Mandrake or RH package. RH was a pain with things like MP3s and proprietary drivers, so Mandrake seemed obvious. And yeah, SaX/YaST was a little clunkier than Drak.
I went to Fedora Core in their first version because the third party repositories became seamless enough and they were easily the best supported, especially for on-the-edge software.
Went through some Arch, Gentoo, Ubuntu, Pop_OS! etc days in-between there but have mostly settled on Fedora KDE, these days.
I started with SuSE 7 (purchased it!), then Mandrake, then Fedora, then Ubuntu, then Arch and now reluctantly back on Xubuntu because I can't get my laptop to sleep properly on Arch...
Do you remember why you switched from SuSE? I only have vague memories but I feel like the package manager might have been a bit clunky?
Maybe I should give openSUSE another go, I really dislike Ubuntu's 'ads' and snap.