Simply put, I like my privacy. I originally acquired a PO Box to have an address associated with my domain registrars. You have to have a physical address as a just in case. In this instance, I use a PO Box as otherwise, a billion people will know where I live, and I don’t want that.
With this in mind, I decided to publicize my PO Box in the case that someone would want to write me. Right now, I don’t check the box often, but in the coming months, I will be checking it more frequently. This more frequent checks will likely happen in May 2021.