to be honest, there not really childish, well if you bring it to the fact that they bring you joy, however NT's have this mind set of oh so and so tell me I'm too old for this thing, well i should get rid of it then, Without first considering that maybe they have this deep connection with things because it brings them joy to some degree, to own these things, they have a sentimental value to them. and lets say there were actually childish, why should it matter in the first place, i mean maybe my views are a bit biased because, i take pride to some extent about the fact I'm childish and carefree. I'm 21 and still enjoy cuddling teddy bears, and playing dress up etc etc, not a bad thing that you still enjoy those things, just that NT's view it as beyond what someone of there age should do, because i don't know bob next them in class, said so. Have i had those experiences? absolutely, on a regular basis in fact, it does make me kinda sad that NT's are so quick to categorize people based on what they perceive to be childish though. Honestly though at the end of the day you be you, weather that be Spongebob (which NT's don't realize is an amazing show all around hehehe), or that you like soft teddy bears, or the you still play with toys, building with lego (which NT's should definitely do more often, as its really good for the mind) (actually all of these are very good to keep the mind in check) etc etc. NT's will never get that is probably some mental health benefits to such activities also. So yeah, you might be 19 and still like pastel fluffy blankets, you may be 35 and like cartoons, either way, NT's will be very quick to form judgements about people, and probably anyone, however don't let that stop you doing such things.