There are an infinite number of things we will discover when we reach our final exit from this spot. Speculation and science chasing just a few of those things we will discover is just that.
Some things you just have to accept on faith and accept them as they happen. As for when and where, that's not my call. They are coming my way and as I age, I recognize it.
Science is not exactly chasing the idea of a spiritual realm. More like running away from it. There is a certain degree of peer pressure among modern scientists to ignore and even scoff at the idea of a higher existance. It has nothing to do with the scientific method itself, however. People like Richard Dawkins who attempt to use science to “disprove” God are really abusing the scientific principals they claim to follow. They make an absolute statement that there is no God even though they have zero empirical data to show it.