Imagine that.
Then you must believe that either there is no heaven as well or you do not believe that God is just.
but I am concerned with why others believe there is.
I think that correctly not believing in hell is a much more dangerous position to be in than incorrectly believing that there will not be such a place.
This concern stems from the fact that I have seen many people spend much time and effort trying to avoid it, I would like to know why.
Actually most people are spending their time and effort doing all they can to avoid going to heaven. Avoiding hell is easy and requires no effort whatsoever. IMO, avoiding heaven, resisting the saving call of the gospel of Christ, thumbing your nose at the creator of the universe, resisting the Holy Spirit takes a lot of effort and is clearly not worth the reward.
I think that correctly not believing in hell is a much more dangerous position to be in than incorrectly believing that there will not be such a place.
I have no problem believing there is no hell, and hoping there is a heaven, or something after death, and I believe that God is neither just or unjust, He is God, and justice is for humans.
While it may appear that way to you, that most people spend time and effort to avoid going to heaven, it doesn't to me. God created us all with opinions.