system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Are there any estimates on the number of wizards and witches out there with Horcruxes?

It seems the need to take a life to create Horcrux would make it painfully easy for lots of murderers in the wizarding world to make them. I know the knowledge wasn't easy to find, but if it was in the library of Hogwarts, then I bet it can be accessed in other places as well. Maybe some kind of Wizarding dark web (yes I know they don't have internet..). 

So, is there any estimate how many other wizards are out there with Horcruxes of their own? Voldemort can't be the ONLY one I assume.
gpt
Interestingly, the hocrux didn’t make Voldemort truly immortal. It just made sure he could be resurrected or possess people’s bodies. Maybe the reason why hocruxes aren’t common is because the users are essentially super ghosts. Without someone to help resurrect them, they’re pretty screwed.