So the goal is to gain muscle and lose fat. If you want to sculpt your muscles, go to a surgeon. Muscles can only get bigger, or, if you don't train, smaller. You cannot sculpt a muscle. Your muscle's genetic code determines muscle shape, not the exercises you do.
Muscle is a wonderful thing.
It burns fat and it provides us with structure and balance. When people get older you see them shuffling when they walk. Shuffle step is usually a case of lost strength, which results in lost balance. Also, muscle is leaner and more attractive. Myophobia keeps many from achieving fitness.