"Title for my review"
The world of the Dark Tower is every bit as vast as LOTR or Star Wars or any other Sci-Fi/Fantasy I have read.
It is not so easy as a turn off your brain and read series. Some of it is crude, but that's King's style for you, and it works.
The character of the Gunslinger is one of the most amazing hero/anti-hero characters I've known. He kicks butt, he's gruff, he's got a kindness but he can be as hard as steel. his single minded quest for the Dark Tower make him interesting.
Perhaps the series is not for everyone. Some people don't like anything no matter what is said. Either they don't get it, or it's not their taste.
Those that read Gunslinger need to remember it was written by King before his first book Carrie was big. The rest of the series is written more recently. Give them a try. I listen to them over and over.