‘Avengers’ Star Chris Evans — I Want to be the Next Bear Grylls

-schmavengers … Chris Evans says his real dream in life is much more primal — revealing that he secretly longs to eat bark and live in the woods a la “Man vs. Wild.”

The “Captain America” Star told Details magazine he dreamed about going all Thoreau back when he was a kid … saying, “For a long time all I wanted for Christmas were books about outdoor survival. I was convinced that I was going to move to the woods.”

But this wasn”t just some pipe dream … the movie star says he was completely committed to the idea and even practiced for the lifestyle — explaining, “I swear to God, if you saw me when I am by myself in the woods, I”m a lunatic, I do crazy s**t.”

“I camped a lot, I took classes” … Evans said, adding, “At 18, I told myself if I don”t live in the woods by the time I”m 25, I have failed.”

He”s 30 now … an A-list movie star … and probably lives in a mansion, or six.

Sounds like a real failure to us.