Who said "Why is it always the end of the world with you people?"?

This quote is attributed to Tony Stark / Iron Man.

Why is it always the end of the world with you people? - Tony Stark / Iron Man

"Why is it always the end of the world with you people?"

Tony Stark / Iron Man Humor

"I am Iron Man."

"Genius, billionaire, playboy, philanthropist."

"If you're nothing without the suit, then you shouldn't have it."

"The difference between you and me? I'm not afraid."

"Never underestimate the power of a good laugh."

"Laughter is the best medicine."

"A good laugh is the best medicine."

"Laughter is contagious and wonderful."