At the risk of sounding like an a**hole or extreme.
I am a Christian who believes that Hell exists. However, believing in Hell and desiring that "some" people should go there are not the same.
I personally do not hold to a Universalist postion with regards to the afterlife. I am a believer in missions and I believe Jesus was and is also. I find it difficult to see the necessity of missions to step out into the unkown to share a message deemed so vital, at the risk of much personal harm, if everyone in the world will enjoy the same heavenly destination because it doesn't matter how someone lived this life. I personally don't know any missionaries who hold to a universalist belief.
I also see in scripture some descriptions of hell that sound horrendous. And many of these descriptions come from Jesus. In my experience, the validity of the message has a lot do with the validity of the messenger.
I wish there were no Hell. But I don't have the "big picture" that God has. I'm not above correction on these matters, I just hope if needed I'll be willing.