A quick thought

Here is something that I have been thinking about today. I said this to a friend and I am wondering how true it is. It seems true to me. Feedback is welcome.

"Real manhood is measured by the happiness of those he's responsible for. If a man doesn't have any responsibility, then he doesn't know what it is to be a real man."

Seems logical to me. How would you measure the success of a man?

Sorry, it's early my mind is wandering.