Without balls, it doesn’t matter if something hits you in the crotch. It’s not going to hurt, it’s no big deal.
With a vagina, you can reach places inside your own body that men can’t reach in theirs. You can feel things pass into your hips, deep into your abdomen, tickling you from the inside. Just incredible, orgasmic sensations.
You get a hole that lets you do incredible things. Most women can fit a fist inside them, some even two. After all, it can fit an entire baby. Most men can’t even take a finger into their butt.
Women have no weakness, get to feel incredible sensations, and have a hole that can do incredible things. Men can’t. Isn’t it obvious it’s better to be female?