I have a collection of over 80k ebooks. I got most of them in huge download packs decades ago, and removed duplicates. it’s a surprisingly small folder.
I did the math on it long ago and it would take more than 200 years, reading an average of one full book a day, every day, to get through them all.
So I’m happy just knowing that if I get through some of them, it’s better than none of them. Time is limited, make the most of it by doing what sparks joy, and not worrying about what you didn’t get to.
They don’t come around anymore, but I used to say that I was disfellowshipped/excommunicated, whichever was fitting for whatever religion they were selling. If they ask why, which they basically never do, just say “I’d really rather not talk about it, if you don’t mind…”
They don’t actually want to waste time talking to people who were kicked out of the church for “bad behavior”, and in many cases aren’t even allowed to, so they blacklist your address.
No soliciting signs typically do the job, too, though.