Fortunately its relatively cheap, universally available, and extremely effective. It could be considered the best, simplest performance drug possible.
As for emotional arguments about 'going against your body' that's religion. Your body was designed to resist constant parasitic infestation, never be washed and exercise hard every day, all day. Who wants to live that way? You could consider 3 meals a day as 'going against your body'.
The problem is we when live less and less in the way our bodies were designed.
For example, we were built to receive all sorts of positive side effects from exercise. If you don't exercise at all you lose those benefits. It's doable -- many people don't exercise -- but it's a loss to be sure.
Another example, using your three meals... We were not built to be eating as much as most of us do as consistently as we do. Take one look around you and see how many people are headed in the direction of obesity.
When you combine the eating and the exercise you get a deadly combination.
And there are other examples of "going against the grain," which when taken individually are not hugely detrimental but when you add them up they are harmful.
As for emotional arguments about 'going against your body' that's religion. Your body was designed to resist constant parasitic infestation, never be washed and exercise hard every day, all day. Who wants to live that way? You could consider 3 meals a day as 'going against your body'.