yes it does look childish but don't forget how successful Doge was by looking utterly comical.

you know if this coin was used in schools to teach children about new forms of money, used for school fundraisers or even used as rewards for good grades (like those smiley stamps we all used to get) then this could really take off..

don't forget that ALL of us whether young or old use smileys nowdays...  and that is an example of how something infantile can become ubiquitous...