Captain America isn’t as cost-less as you think; to quote from the Marvel Wikia about the ‘super-soldier serum’ that makes a Captain America:
But the more powerful variants come with strange side-effects that may also include mental deficiencies.
(In one random comic—I have no idea which—that I read as a kid, S.H.I.E.L.D. had apparently put Captain America into cryogenic suspension specifically to stop the serum from killing the cap’n, in the hopes that the future could fix him. Quite a side-effect.)
In fairness, in the 1940s nootropics would have been hyped as the salvation of humanity (and any potential side effects carefully swept under the carpet).
Wait, so they’re not making the Captain America movie now?
Captain America isn’t as cost-less as you think; to quote from the Marvel Wikia about the ‘super-soldier serum’ that makes a Captain America:
(In one random comic—I have no idea which—that I read as a kid, S.H.I.E.L.D. had apparently put Captain America into cryogenic suspension specifically to stop the serum from killing the cap’n, in the hopes that the future could fix him. Quite a side-effect.)
In fairness, in the 1940s nootropics would have been hyped as the salvation of humanity (and any potential side effects carefully swept under the carpet).