Well, you just replied to the question “why are they popular?” with “because they became popular”. Okay, so why did they become popular? Because despite the flaws they definitely have, they’re simply good stories with good world building that suck people in (not just kids btw, plenty of people got into them as adults).

Looks like that 🤷

Okay, so why specifically that series among the many other wizards and magic series? I think Rowling is a piece of shit as any sane person should, but let’s not warp reality. The books may not be your cup of tea and of course they’re not perfect, but they’re definitely good books, otherwise they wouldn’t have gained the popularity they did.

Why do you think they’re so popular then?