We are all kids at heart. We had a YA novel out for test reading, kids hated it, but the one person who found it "brilliant" was a very portly, unshaven, beer drinking, ever word censored, civil engineering site manager.
Everyone has there own "little secret" passions. Who are we to judge?
Enjoy what you like! If your embarrassed, don't tell anyone. Kids want adult grade shock and detail, adults want a bit of escapism. Market trends are useful, but demographics are so heavily skewed in all countries, and not because of reading ages or abilities, but because they like what they like and are not always prepared to be honest or open about it.
a funny animal.