You did not understand again:

Many want to marry a fighting girlfriend and acquire a reliable rear, but not all girls grow up with such friends. Do you think it’s better to get married to a princess, or keep your nerves safe while being single?

A fighting friend is not a reliable rear, like a sloth to cover your ass, it is a man who goes hand in hand with you, and you will not acquire it. Your false dichotomy "eat shit vs. starve" gives you up with your head.