I actually wrote a whole (free) book about it, haha! (I'm a retired journalist.) In short, I got tired of feeling like I was always being followed and watched. I also disliked the way the big tech companies have been taking over U.S. politics. I was proved right after the last election and updated the book to reflect the new administration. And so many more reasons! I also quit Microsoft and Amazon, most of Meta (I have some friends in other countries who only use Whatsapp), and am working on Apple.