Why does the physical strength gap between men and women scare me so much?

When I was teen I play fight/wrestle with my classmate and even thought he is very small and skinny guy and I'm quite curvy he still managed to dominating the fight that kinda traumatized my perspective about men. When he pulled my arm its very hurted me I can't believe how tough men's body are. I can't imagine pain ufc fighters or men who fighting like wild animals have. I feel really really bad for women who are having domestic violence. That kinda traumatic for me cause I would never be in places where I'm the only woman or only woman without men that cares about me.

Why does the physical strength gap between men and women scare me so much?
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