If you were to describe what it means to be a man in one word, what would it be and why?

"I chose protector because men are designed with a mandate to protect what is given to them.  Being a protector means always being selfless and putting others before themselves, and from that calling other men to a higher standard.  It is mutually accomplishing for our gender roles."

Word: Protector
Occupation: Student
Age: 18
From: Colorado Springs, CO