Earlier quoted context omitted.
If you ever visit Chichen Itza, you can see murals depicting their ceremonies. One of them shows how two teams would compete in some kind of sport involving hoops and balls, and the leader of the winning team would be sacrificed. And everyone involved thought this was awesome, because it was a great honour something something the gods something sacrifice for your people something. With our modern sensibilities and ra…
It's really not mindboggling at all, in regards to modern sensibilities. It's still regularly going on today. It's identical to blowing yourself up to kill infidels (argued as a great honor by those advocating it, you're the chosen one). And it's similar to crashing your plane into a ship as part of the Shinpū Tokubetsu Kōgeki Tai, commiting suicide, sacrificing your life to defend the empire and emperor. To be clear…
The former has no reasonable or practical reasoning.
The later - does, as I think any service member will understand. Every mission has some degree of likelihood that one will face death, some are just willing to up the ante to . a much greater level. The belief in some kind of 'special heaven' is not really the motivating force, it just kind of makes it easier to do.