i'm 38, and i'll be doing ghetto cosplay of k-on ritsu this year. thank god i still look young, at least =P
anyway, let me give you my observations of watching anime families grow up for 9 years of owning an anime store. it's been, honestly, a real privilege to see these families. i saw their children when they were barely walking, or babies, or pre-teens, and now they're in high school, or in college.
WITHOUT FAIL, every single one of these kids appreciated and loved that their parents loved the same things they did. they loved that their parents would take them to conventions. they loved that their parents helped them with cosplay. they loved that they had something to talk about and share with their parents. EVERY SINGLE ONE of those kids has grown up to be happy, well-adjusted teens and young adults. because they were close to their parents, both parents and kids trusted each other, could talk to one another when things happened. all of these kids are respectful, kind, generous, good-mannered people. we've watched these kids go to college, and their parents love to brag about how their kids are straight-A students, or on the dean's list in college.
i've never heard a kid say, "wow, i wish my mom wasn't so into anime, it's embarrassing!" i've only heard kids say, "wow, your mom is so cool, she cosplays! i wish my mom liked anime, instead of yelling at me about it."
_that_ is good parenting.