I know many Catholics, Protestants and Jews who practice their religion and even if they don't believe or accept everything that is stated, they still are content to be members of their faith. Basically, many people don't accept their churches 100% but still happily remain.
EXJW's on the other hand view the Witness religion as totally horrible. We are not like other religions. We don't typically accept the religion with its good and bad points. Either we believed it's the "Truth" or we didn't. There was no middle ground. Why are we like that???