Some people feel Christians are narrow minded, and certainly many of us have been rude and inconsiderate in dealing with those that do not believe what we believe. But there is a legitimate reason that even a caring Christian might be viewed as narrow minded. The Bible does actually teach that Jesus is the only way to the Father, in fact Jesus said those very words Himself!
It is not intolerance or meanness that motivates most Christians to believe and share this fact, but they speak out of a faith in what God said and a concern for the souls of those they love.
Let's be honest, many other religions also believe their teachings are exclusively correct. But as we discussed in this dialog, there is an absolute truth about God, and it is critical that we know what it is.
The difference in Christianity is that God supernaturally came to earth to become a man and take the punishment for our sins, it is not just a set of philosophies or rules to obey, but a solution to mankind's sin problem provided by God Himself. God confirmed the claims of Jesus by raising Him from the dead. There is good reason why the life and death of Christ are the center of human history.
Sadly, those that decide to reject that gift of forgiveness through the sacrifice of Christ die in their sins, and there is no hope. The Bible does not teach that there is a purgatory, or a second chance after this life. The wrath of God abides on those who have not received His free gift of forgiveness through Christ, and they will spend eternity in Hell.
Please take the time to read What hell is like according to the Bible.