My family doesn't know how serious I am about tarot, they're all super-rational atheists and think reading cards is ripping off naive people with some wishy-washy stuff. They do get that the history of emblems and symbols in the Renaissance can lead to an interest in tarot, and they know by now that I collect tarot decks and read with them. I've always been the purple-and-green sheep at home so I guess they chalk it up to my general irrational weirdness.
My husband's family is rational and atheist as well but more openminded and interested. They actually ask from time to time what I'm doing with my cards.
My friends know and ask me for readings. My colleagues don't but that's simply because it never turns up and I work alone anyway most of the time.
My husband used to share my interest in the tarot and was very good at it - but in the last few years, his workload has increased to crazy heights and he doesn't have the energy to get into it again which is a real pity. He has an amazing eye and intuition. I decide right now that I'll draw him in more again.
But in spite of this tarot-friendly-to-neutral environment, I still don't find the way to "come out of the closet" professionally, start teaching or offering readings in my area. First of all, I think I'm really not good enough. And secondly, people would probably think I'm woolly in the head or a charlatan if they google my name and tarot comes up. There are simply too many TV shows and movies that give tarot a weird, if not a bad name. For an academic teacher, that's not a "proper" subject matter. My students would probably fear that I spy on them with my cards...