9 L* m9 i* x* g+ l/ J. qThe primary useful purpose of the tooth-fairy myth is probably to give children a small reward and something to look forward to when they lose a tooth, a process which they might otherwise find worrisome. It is fun for both parent and child. It also gives children a reason to give up a part of themselves that they may have grown attached to. ; r4 K# N# i) ~/ A" a' Z 9 {1 T- w0 f5 F% WSome believe that other useful purposes include giving children a sense of faith in things unseen, believing in the incorporeal, and helping them understand the difference between the real and the imaginary.; m5 u7 ~% i3 f% I- _/ [0 \& U