If handled properly--our Tarot Decks are infused w/ our own energy--they are a part of us--so giving one away is like giving away a piece of yourself.
I would REALLY have to trust someone (beyond a shadow of a doubt) to give them one of my Decks (and have never done so).
I think that if I happened upon a Deck that turned-out to be something that offended (or alarmed) me--I would either destroy it--or lock it in a wooden box.
Peace and Love on the path of your choice...
Blessed be...