It's a filesystem created by and named after a murderer. Just because you're fine with it does not mean everybody is.
On a more on-topic point: my experience has led me to believe that the Reiser fs (Reiser4) has a narrow use case only when quick operations (seek/read/write) on an inordinate amount (hundreds of thousands+) of small (<1MB) files is required -- and that high performance is absolutely necesaary.
I failed to find any other use in my experiences with it.
I was quite surprised when I initially ran out of inodes my first go-around, as well.
[0] Really, no one cares that much. Whenever the name comes up in less formal circles, obligatroy low-effort "dead wife" jokes surface, but what usually follows is discussion on the filesystem's merits. The outrage is from a vocal minority that I would deduce aren't in any position where choice of filesystem is of their concern.
If you truly inhabit a healthy, antifragile state of mind, you must realize that many of us are not as enlightened and do have emotional reactions to things like this.
It doesn't mean we are inferior, it just means we are human.
anecdote : I asked a young developer near me 'Hey, do you know the Hans Reiser story?'. The reply was 'Who?'. The reply came from someone familiar with the filesystem, and that general line of work.
tl;dr : Reiser is just a name. It was recently the name of a 'bad guy', but it hasn't always been, and won't always be.
p.s. I've lost data with ReiserFS too. I'm glad I don't have any need for it any longer.