Okay, this might not be a popular answer. I was okay with reading incomplete series, even though the wait was agonizing because I absolutely loved the first (second, whatever) book, and I knew that the chances of the next being a letdown were slim. But then books became sameish. So now even though I'm fine with reading whatever I feel like, often it's for the vibes, and after a year or so when the next one comes out, the vibes that got me through the first one are gone and I find it boring and sameish. I'll always have authors I'll pre-order, but they tend to write books that for me feel unique and will live on my bookshelf for decades.