Some of you still don't get the concept that thinking one is right or actually being right is intolerant. If my doctor practices evidence based medicine and is intolerant of quackery that can kill people, that does not make her intolerant, just right. If it does make her intolerant (of stupidity), then that is a good thing. This is a lame smokescreen to avoid the implications of a true vs false worldview (blurs the distinction).
thinkaboutit: Catholics have many extra/contrabiblical ideas. They affirm a sound doctrine of God including the trinity, Deity and resurrection of Christ, virgin conception of Christ, etc. The key is the Deity and resurrection of Christ, core gospel truths that JWs deny (Arian heresy and recreation of Michael vs physical resurrection of Christ). Some Catholics know and love Jesus (the real one, not generic cult jesus), while others are simply nominal. The uniformitarian view of JWs cannot fathom how Catholics, Baptists, Pentecostals can all be saved (our fellowship is in Christ, not submitting to a fallible organization in the Vatican or Brooklyn). This is not to condone Catholic error, but JWs major on minors (birthdays, Christmas, blood, tetragrammaton, prophecy, etc.) while being wrong on majors (salvation by grace through faith alone in Christ; Deity/resurrection of Christ, etc.). Christian denominations disagree on peripheral, debatable issues, but have common faith in Christ. Cults deny the essentials of the faith (even if they are right on some peripheral, non-salvific issues).
The reason people are condemned for eternity is that we are sinners who reject the true God/Christ/salvation. Trusting a counterfeit like the kingdom of the cults offers is worthless and leaves us dead in sin without hope.