I mean, first - the loss of hair is temporary, second - not all cancers are that vicious. It might be worth it if the probability of survival after treatment is high. This article was about almost certainly incurable cases, treatment or not.
Whether or not it grows back is irrelevant. I will not stand to be without my hair for even a single millisecond.
The only way I would even remotely accept chemo is if I could get a 100% guarantee in writing—with an agreement to immediately kill me if I wake up early—that I will be put in an induced coma before chemo and not taken out of the coma until after my hair has completely grown back and surpassed its previous length, and I want the anaesthesiologists legally obliged to err on the side of me not waking up ever over the possibility of me waking up before my hair has fully grown back.
