They did it as entertainment to keep their gods happy and pleased as well as to keep everyone entertained, or they would use their "games" as a sort of punishment
I think it's "I'm a warrior and warriors don't cry"
People realize their key in life
capitn mavel jsut because she is sooo much cooler
marble i think since they build a few temples for the gods with marble but normal people would build with mud idk if it can be called cement.