I cannot speak about it from your perspective because I don't know all the details, however it appears your family in time did become accepting of you and your love for MLP which is cool.
My family know I like My Little Pony Friendship is Magic
I was a little afraid at first, but when I started purchasing DVD's of the show and now I have all of the seasons, after they came through, they found out anyway, and no negativity came from it. So I don't even try to hide it from them anymore, although I am still not confident enough in it to be wearing my MLP shirts outside. If I were to wear one, I'd do it under a jacket.
I'm obsessed with the franchise as well, I like how cute Equestria is, how funny characters can be, like when Pinkie Pie released her rage because Applejack broke a pinkie promise in The Last Roundup.
I wished I could be a Pony in the fictional realm Equestria from MLP FIM but in a different timeline of their past where events played out almost the same as well, because I genuinely believe if that were to be the case, I'd be in a more peaceful world with less conflict. And no, I don't regret that or cringe at such wishes because there is nothing to feel bad about, I'm not evil for doing it, nobody would be evil for wishing such a thing if it was for an innocent reason like wanting to be a good influence and friend there, and I've even had a couple of friends tell me that wish is cute, especially since I'd desire to be a kind soul there too, not just take advantage of others, that is why my fanfic involves a fantasy about my OC reincarnating there, so that my OCs new upbringing could ensure my imaginary self was never a threat to them or their world. I would desire that, carrying no negativity toward them whatsoever, they would be in control of the nurturing aspect, not me.
Why would I want them to be in control of that? because of a thing called innocence, that is why.