Why do some sites have limits on password length? It seems like it would be in the best interest of security to allow for an overly verbose password such as "This is an example password, and the point of it is to illustrate that even if it's coherent it's kind of hard to work it out through brute force methods due to how unreasonably long it is. Also, 69420133711037, my dude.", but a lot of sites have length restrictions and that just seems weird to me.