Hair; how long is too long?

I always wanted hair that went down to my ankles. However, it doesn’t seem to wanna get that far. In fact it doesn’t really wanna get far at all lol.
How long do you think is too long? Either on you, or another person?
I was looking up pictures of people with really long hair, and some of what I saw was really pretty, but it seems to me that it must really be a pain to maintain. Especially long curly hair. But I would personally put up with my hair if it got that long, (I also wish mine was curly) as long as it wasn’t dragging on the floor behind me. What about you?