So I understand that they are useful for long one track albums with multiple movements, but I've heard people say albums should have them for documentation reasons, even if the tracks are split up. On Musicbee I'm able to have both, all of my one track classical albums are shown with separate tracks, and albums that don't necessarily need them still display properly. I'm just hesitant to delete the files as I don't want to regret it later, and I know that it will take an excessively long time to go through all of my folders to delete them. I love Poweramp and I don't want to bemoan it, I just don't get why I can't just add folders to the library and not have to worry about the cue files.
Also to clarify, when an album that doesn't necessarily need a cue file has one it will only show a couple of songs from the album, with the rest nowhere to be found, until I delete the cue file that is.