I'm not a psychologist but I think you have a bad case of conservatism.
The orthodoxy of seeing History as a teleological process ending in salvation of one form or another (be that eschatological or melioristic) is at least 2000 years old via Christianity and its more recent secular progeny of Western Liberalism, Islam, etc.
I'm not sure it counts as being conservative to belong to a minority (at least in the West) that thinks that the pre-Christians had it more correct in the tragic view of human nature which was dominant before that (tragic as in humans there is no salvation or teleology to history, humans don't really learn and cannot transcend their nature so just exist in cycles of gains and losses).
It can't be conservative to reject perhaps the core principle that underpins the currently dominant worldview imo.
Nope. Waiting for Jesus is passive and discouraging. It's what you do when you think you are helpless. Keeping this narrative out of politics (and your daily life) is encouraging. It enables you to think about what you can do to make things better and gives you the hope needed to be active. Secular humanism and (your version of) Christianity are diametrically opposites in that regard.
As an atheist, I don't have a version of Christianity.
It does have one key advantage over Secular Humanism and other forms of utopianism tough, in that it accepts humans are fundamentally flawed and thus cannot save themselves and relies on Divine intervention for salvation.
Humans thinking that the less pleasant aspects of human nature can be 'fixed' if only we could all become more rational is a dangerous delusion.
That's why religion is so often painted as the devil in the secular salvation narrative. If we can only cast out the devil then we can reach the promised land.
Christians who think they can speed up the 2nd by eradicating sin were always among the worst kinds. Their heirs in the secular utopian traditions were/are often just as bad, if not worse.
hat was what I were saying. Unrealistic goals lead to disappointment, yes. But you don't want to have any goals out of fear of disappointment.
The idea that accepting the tragic view of human nature means you can't have goals is a common misconception of Humanists. It couldn;t be more wrong.
You can set goals just the same, it's just that the goals are based on accepting human limitations rather than thinking they can be fixed.