Is it pointless for women to learn self defense?

Hello!

I am a 19-year-old woman who is interested in taking up a martial art, to try something new but mostly for self defense.

I’ve done some research on the best and most effective martial arts for women’s self defense, and many people seem to say Muay Thai, so I’ve been looking into classes.

However, many people in my life (when I brought up that I was going to take up Muay Thai) have said that if a man wanted to attack me, there really wasn’t anything I could do even if I was highly trained, due to basic biology. They said that there was no point in learning self defense as a woman.

Of course, I am well aware of the huge physical advantage a man would have over me, but is what they said true? Is there simply no point in learning self defense as a woman?

Thank you!