I keep a factual list of books I have read, and keep it in an excel spread sheet. But my intentions may be different from yours.
I keep the list for a few reasons, one is that I wanted to read more. Hard to know if I'm reading more if I'm not tracking how much I'm reading.
Another reason is I wanted a list to refer back to. People ask for recommendations, it's nice to have a list I can go through and see what I've read.
And the other reason is that I want to be able to search for a book to see if I have read it (and how long ago). I also wanted to be able to access the list from anywhere, so it needed to be on my phone or in cloud storage.
My personal list is not about reviewing the book or thoughts on the book, it's simply a list of books I've read, along with dates I started and finished.