Not a particular reason. But if I understand this correctly, uBlock does way more than Privacy Badger, has more blocking lists you can choose from, which all get updated very frequently, it also blocks ads, and uBlock origin is like *the* ads/tracker blocker.

I just wanted to know if there is a particular reason, why someone would use Privacy Badger. I didn't want this to sound like "you should use ublock instead of privacy badger". I was just curious, if there is something particular I haven't thought of.