I have a blanket statement to make, and I realise that not everyone is like this but I think it is a fundamental truth. Its a fundamental truth as I think no one wants to actually know what bad things are happening as people prefer to have a happy life with no problems. So here it is.
No one actually wants to know the truth.
Now after you have exhaled deeply or thought what you intend to comment about "how you want to know the truth" just wait and let me elaborate. There is a lot of denial in the world. For example, everyone was shocked when Edward Snowden revealed the extent of the NSA eavesdropping. Honestly, if this shocked you then you fit the model that people don't want to know the truth.
People want to be happy. People do not want to know when their neighbour is molesting their child. People don't want to know that their friends are cheating on their tax returns. People want to live a peaceful life and so people find life a lot easier when the truth is not always evident. When they find out something like the examples above it requires a lot of effort to right the problem and people don't like problems.
This is why People like the idea of Heaven/Nirvana or what ever else you want to call it. Its the easy way out rather than facing your mortality. It gives you the option to pretend that life can go on forever.
This is why you get such a violent reaction when you present this evidence to a theist. They don't want you to tell them the truth they want to live in denial as it is easier. This is one of the reasons religion is so powerful as it plays to the basic needs and desires of people. Those basic needs such as immortality.