They think it's childish out of pure ignorance for the hobby.
It's just like how some of my friends said that I was 'gay' to be using facial blotting paper on a regular basis. Heck, you should have seen the smirks on their faces when I told them that I use benzoyl peroxide and facial mosturiser twice a day.

Let 'em be, I say. Those fools can have their source of laughter, while the rest of us humans can have ours.