Chris Evans [Photo/Agencies]

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The 32-year-old actor - who is set to hit the big screen in 'Captain America: The Winter Soldier ' - is glad he starred in the Marvel films but admits he no longer has as much passion for the franchise as he once did.

He said: "I would never trade in the decision to have done these movies. I've been wildly fortunate. I just don't know if my heart's as in it as it once was."

The hunk plays the titular character, who is also known as Steve Rogers, in the sequel to 2011's 'Captain America: The First Avenger' and feels he can relate to his alter-ego.

He told GQ magazine: "Steve has everything he wanted, and he's still not quite happy. It's like he's in his adolescence, trying to figure out where he fits in, who he is and what he wants."

Evans hinted he'd step back from fronting films and would prefer to be involved in the filmmaking process because he isn't a fan of the additional responsibility an actor is forced to undertake.

He added: "I would imagine the world of a director is a little bit cleaner in terms of your responsibilities."