You should regret it. Because you make a lot of claims: "ALL humans are spiritual creatures," just for example. I am human (you'll have to take my word on that), and I am not anything like what I would consider "spiritual." You say that "humans have searched out the transcendent from the beginning of history" I can tell you that (yes, I'm still human) I have not searched out the transcendent -- because I feel that it is nonsensical and an attempt to make the reality that we all know (we all go to funerals, we all suffer sometimes) not be the reality you want to accept. You don't like that reality, so you look for something else, and when you don't find it -- well, you just make it up.
How do you explain the many, many more billions of dollars spent on sports edifices, sports education, sports literature, sports debate etc.? What is the great "transcendent" prize we get from all that?
You ask, finally -- and this is the most important -- "How do you explain men going to the flames for their religious beliefs, the factions and dissentions within families, the honour killings, the sacrifices, the wars, etc, all in the name of religion?
And my answer to that? Stupidity. Killing yourself for a belief ends your belief -- because you're dead. Honour killings are purest evil, only slightly worse than sacrifices and wars in the name of religion. Here's an example: try to justify for us, in your own words, how cutting the heart out of a living human being makes for good religion.