And that problem is compounded by the very obvious nature of the destinations. For example, within a few chapters of the first book you'll have a pretty good idea of who/what the main character is, but the series takes several books to get there and treats it like a massive reveal.
Similarly, because of who/what the main character is, they're rarely placed in a situation that is genuinely precarious/where the outcome truly hangs in the balance. This means that most of the drama is internalized and emotional (e.g.: "Will I choose the light side or the dark side; will I try for unlimited power or will I limit myself"). Again, there's nothing wrong with that in moderation, but it's a very long series and I eventually found that aspect tedious.
Ultimately, I think the best description of the series is that it sold a ton of books (fifty million Frenchmen can't be wrong, so there's clearly something worthwhile about the series), and that Robert Jordan originally intended for it to be a 6 book series but it grew to 14 books in the end (so there's clearly a lot of bloat).
I gave it a good-faith effort and couldn't make it through the tedium, but many others could.