I've been there with everyone here but honestly I think I get it less for Disney than for everything else.
I'm the 'toy expert' certified. I've been working in toys/video games retail all my life. I also collect them because how am I going to know all the details of the new dolls or games if I don't own them, right? Then I married another toy collector and slipped into sci-fi geekery with him. I've been an avid Marvel reader since I was knee high to my mom, I have weird pets, I'm genderqueer, I have an art degree. In short NOTHING I do has ever been considered mature by my family. I used to dwell on this, now thanks to the hubs I just let it go when they comment. What I consider mature has always been helping others, treating people with respect, paying your debts when owed, and taking care of responsibilities. The family has stopped trying to remold me to their standards and if a friend would 'shame' me for going to WDW without kids then they probably won't be a friend for very long.