Based on how some people seem to believe "women want a man who is strong and muscular".
Well... some women don't want a man at all...
For me, I find some "strong" men scary...
But well... I guess the thing about someone helping you carry heavy stuff for you is kind of romantic.
and there are often scenes in romantic kdramas, where the male lead would be carrying the female lead, when she sprains an ankle or something.
I guess I feel attracted to strong men, if I know that they are sweet, kind and would never hurt me.