If the belief of Universalism was true, then maybe God would be something like this? Where everyone goes to heaven, no matter what.
Many people can't believe God would send people to Hell and refuse to believe it, claiming God is a kind, loving god. Which He is, but God is also a God of justice and holiness, but they deny what the Bible clearly shows multiple times about Hell, that is where people will go if they don't follow Jesus.
If people deny God and His existance and refuse to follow His ways, or follow their own version of God, why do they deserve a place in heaven?
Sadly, the idea that Hell doesn't exist and that it's only a state of mind is starting to get more popular with Christians, especially with those in the Emergent Church movement.
Remember what Jesus said in John 14:6 "I am the way, the truth, and the life. No one comes to the Father except through me."