Helped in what way?
I agree that some men are testosterone deficient, but they are a tiny fraction of men to whom testosterone is promoted and who experience a gradual decline in levels. There may be an effect in normal men who take testosterone, but is that a different phenomenon than the effect in normals who experience increased alertness with amphetamines or increases muscle mass with anabolic steroids? Are they 'amphetamine deficient' or 'anabolic steroid' deficient?
I think not.
Let see . . . what are the differences between testosterone, anabolic steroids, and amphetamines? Hmmm . . . I dunno . . . maybe the body does NOT need anabolic steroids or amphetamines and that both are non-natural, not produced in the body substances.
Now, if you're lacking in say insulin like many diabetics do you take insulin or do you make the same argument that you made? Some people need replacement. The same way that some could use testerone replacement. I'm not sure why there is so much opposition to this concept.