^^^hogwash. There are three serves that every aspiring junior (gender irregardless) should be able to use. Flat, kick, and slice. It's a weapon to be able to mix it up and change pace on the ball.
Step 1 is learning HOW to hit them. Step 2 is learning WHEN to use them. I've watched enough college tennis to be able to say that those women that can switch their serve up have a much easier time holding. Every UF player has these skills.