As a [spoiler:lit]dude[/spoiler:lit] with hair below waist I can confirm that sitting on your hair is pretty annoying. The more annoying part though is[spoiler:lit] having to keep your hair out of the way when on the toilet[/spoiler:lit] which is something nobody thinks about before they get hair to that length.>>2563830>>2563849
Waist is realistically achievable and not that much additional effort. Beyond that it's becoming more difficult to manage and care to keep from accumulating damage to keep presentable and at that length. At some point you hit the limit that depends a lot on the person though. Probably not everyone can grow hair down to ankles.