I am fairly similar. For a book to be a 5 star to me, it has to have some X factor (usually that I can’t explain) that puts it in a league of its own. I have to undoubtedly know the second I finish the book whether it’s a 5. I might have two of these a year if I’m lucky (not including rereads) out of a yearly average of 50ish books. I really wish there were half stars because there are some that are so close to a 5 but I find myself making an argument for the 5 and that means it’s a 4, though it’d be a 4.5 if given the option.

4 is a pretty big like and a definite future reread. 3 is a mild to moderate like and possible reread. 2 is mild to moderate dislike but usually with an aspect that I liked. 1 is loathe entirely.