How is a girl who kicks guys in the balls out of curiosity better than a guy who hits girls or grabs their breasts "out of curiosity"?

One urologist has 3-4 boys in his clinic whose testicles were ruptured from a classmate kicking them there.

Why is it still portrayed as ok to kick guys in the balls over being annoying or hurtful? Or as funny?

How is rupturing a guys testicles better than ramming a knife up a woman's vagina?

How do people who do this, girls included, not deserve to be hit BACK, so they stop?
Updates
+1 y
*3-4 boys with ruptured testicles A YEAR
How is a girl who kicks guys in the balls out of curiosity better than a guy who hits girls or grabs their breasts "out of curiosity"?
Post Opinion