I definitely have a fascination with that. I love watching a woman's hair get longer, and longer, and longer. I love watching bangs grow out, and fall in a woman's eyes more and more. I love watching a woman try to maintain an accustomed updo as her hair becomes too long for it, so that it progressively falls down more and more often.

Making hair grow faster also increases its terminal length, assuming that the life span of the follicles stays similar.