Being fit can have a huge impact on individuals life. Like it or not the way you look affects how you are perceived by others. There are studies which showed good looks can help boost career.
Being fit, not steroid fit can be great for your joints and overall health. It doesn't mean you won't get cancer. It just means that if you exercise and have muscle, your joints have better support. Your lungs will probably have better function than someone who doesn't exercise. Plus, it lowers your risks.