You are beautiful as you are. Don't do steroids. In the long term, they are dangerous to your health. Don't compare yourself with anybody else. It is unimportant how much weight you can bench press.
The atheist proposition is very simple. It is impossible to prove that God does not exist because that would be proving a negative. On the other hand, it is equally impossible to prove that God does exist.
As far as I am concerned, you are equally beautiful both off season and on.