I didnt say lifting weights naturally was a vain pursuit, i said it starts to get vain when you use steroids. The point of lifting weights is to look good for yourself and wife, have a better stamina/sexual life.
Also there is no need to inject test when your levels decrease, because it is a natural process; it is unatural to keep maintaining/elevating your test levels while aging. Having your test decreasing while aging makes you getting wiser, calmer, it's actually required to raise kids and stay faithful to your wife. It's like some males want to stay young, teens, forever, and as a result want to focus on childish stuff forever; like impressing, dominating other males all life long instead of focusing on developing more fulfiling social skills and a bigger spiritual comprehension of life inside their specie. Im not surprised some docs actually help people get something they dont need tho, one way or another they must be making some dough out of it.