The main problem with ReiserFS is Reiser killed his wife so it is unmaintained.

That's why I called it "reisserFS" and not reiserfs. I am well aware of the controversies because of what he did on the non-technical side. I am also of course for a very long time by now not using it any longer.

I was merely talking about the experience with XFS "back in the day" and yes I was on reiserfs and then XFS "came up" and I changed my home partition to that, coz I was looking to move off of reisserfs. Power outage. Boom, lost half my home dir. Suddenly lots of totally fine metadata wise files had null length. I did go back to reiserfs until ext4 was stable enough after that. I will never try XFS ever again, sorry. Loosing data is the thing that a file system can't do to me if they want to "retain my business" so to speak.

And yes, reiserfs I actually tested and had survive some power outages totally fine too. I believed the XFS hype too much without proper testing. My bad I guess in that sense. We were all young once. But also: Never again XFS ;)

There is that. I think ReiserSF used to be the default that SUSE used. These days, it seems to be btrfs for root and XFS for everything else.