Oof! Yeah, I got hit with it in the 80's. Basically, some relatives of mine who literally lived on a Bible camp came to our house and told my Dad a bunch of lies about D&D. I tried to argue against it, tried to ask for specifics, for proof. But, hey, you know the type; they weren't real big on "evidence" or "proof" or "honesty". So I was forced to throw away my books. I wound up fishing them out of the trash and kept them hidden for several months before my Mom found them. I unloaded them at a second-hand book store for a tiny fraction of their value; the owner felt bad for me, even tried to talk me out of it, but this time I had no choice. In recent years I've managed to rebuild a tiny portion of the collection (the core AD&D 1e books, a Basic box set, some key modules), but some of the items are hard to find, some impossible, and it would be overly expensive to buy everything I
can find on eBay.
But the loss of the books was only part of the problem. Back then, I had a lot of issues socializing, compounded greatly by a crippling speech impairment. But with D&D, I actually started to socialize, even joined a club that met during lunch at my high school. That all ended thanks to the Panic, and I withdrew again.
My Dad and I are good (long story, much of which isn't my story to tell), but the Bible-camp liars are dead to me (not that we were ever close to begin with). And though it took several years to play out, this was also the beginning of the end of my involvement with Christianity.
FWIW I prefer tanar'ri and baatezu to demons and devils. Much more interesting and flavorful naming scheme.
To each their own, but this is one of the main reasons I passed on 2e. I'd probably play it now, given the opportunity, but back in the day I saw is as a capitulation. Which, frankly,
it was.